ข้อมูลอนิเมะChrome Shelled Regios

In a flashback, as a giant Limbeekoon attacks a Regios, three powerful fighters wielding "heavens blade" begin to fight it. In the present, Layfon Alseif leaves his Regios to attend the academy in Zuellni. Meanwhile, Nina Antalk loses one of the members of her platoon, and is forced to search for recruits. Layfon arrives in Zuellni as two students start a fight, and cause a building to collapse on another student, Mei-Shen Trinden. After receiving a telepathic command to save her, Layfon spirits her away from the building with incredible speed. He meets with the president of the student body, Karian Loss, who forces him to enter a military arts platoon, and Nina, who witnessed Layfon saving Mei-Shen, recruits Layfon into the 17th platoon. Afterwards, Layfon meets Felli Loss, another member of the 17th platoon who sent Layfon the telepathic message earlier. That evening, Layfon recalls that he was one of the fighters wielding a heaven blade against the giant Limbeekoon in the past.

Nina recalls a combat exercise set in a capture the flag scenario between the students of Zuellni and another Regios in which Zuellni lost. Nina introduces Layfon to the members of the 17th platoon, and fights Layfon in a practice duel. While Layfon fares well, he is sent into a wall by Nina's kei blast. Afterwards, Felli confronts Layfon about allowing Nina to defeat him, and reveals that her brother Karian planned to force Layfon to enter the military arts. Layfon meets with Nina during his part time job, and Nina reveals that she ran away from her parents to learn the military arts in Zuellni. The 17th platoon enters into a capture the flag battle scenario against the 16th platoon, and fares poorly. As Nina is about to be defeated, Felli sends Nina's thoughts to Layfon, who uses a powerful burst of kei to defeat the 16th platoon members to the astonishment of the onlookers. However, Nina and Felli are furious at Layfon, Nina because he deliberately held back his power during the battle, and Felli because he didn't.

In Grendan, Leerin is writing a letter to Layfon when she meets a woman name Synola Leisler who notices through Leerin eyes, a vision of a creature and young blacked hair girl. Unknown to Leerin, Synola is actually Queen Alsheyra, with one of the Heavens Blades disguising as her while she’s out. Meanwhile in Zuellni, Karian secretly visit Layfon and comments about his platoons victory, him being a member of the Heavens Blade, the 12 elite warriors of Grendan and wonders why he still working at machinery even though he now has a larger scholarship fund. Layfon responds he doesn’t want the president’s “bribe” and he’s not the person the presidents thinks he is. At the machinery section, Layfon meets with Nina and he explains the reason he held back his powers as he wanted to live a different path that didn’t involve fighting due to a mistake he made in the past. Suddenly, a group of hunters have capture Zuellni, the City’s Electric Fairy where Nina chase after them but with the help of a mysterious stranger who sends all of them into another dimensions, they defeat the hunters but not before the stranger put Nina to sleep using kei. As Nina recuperates, Harley tells Layfon an incident in Nina’s childhood that made her seek power when her life was saved by the sacrifice of her home’s Electric Fairy. As Layfon heads home, he meets Mifi, Naruki, Mei-Shen and latter Felli who forgives him at what happen at the inter-platoon match in exchange that for now on, he must call her Felli and she calls him Fon Fon. As Felli uses her pyschokinesist powers, she detects a large dragon Limbeekoon in the distance. In a flashback based on the Legend of Regios novel (which the entire dialogue is spoken in English) , a man saves a girl name Sae (the girl in Alsheyra vision) as they try to escape a complex.

In the Legend flashback, Sae and the man who rescue her (now wearing an eye patch), have become bodyguards to a woman as they try to escape from two cars pursuing them. In the present, Sharnid takes Layfon to a maid café, much to the latter surprise when he finds out Felli works there. Felli reveals to Layfon she works there to choose her own path. While dinning at a bakery, Felli overhears Mifi, Naruki and Mei-Shen talking about investigating an abandoned research center which is supposedly haunted which she decides to accompany them. As they go deeper into the building, Mifi and her friends are suddenly captured by a creature and Felli is rescue by Vance, her brother’s assistant. Vance reveals the center was trying to create artificial creatures years ago as a counter to Filth Monsters but repeated failure led to the centers closure and the creature that capture Mifi and the rest maybe one of them. As Vance and Felli try to find the girls, they encounter the creature which they manage to kill it when Felli tricks it to be crush by falling ceiling debris cause by her powers with Vance giving it the finishing blow. Vance decide to cover up the incident by telling Mifi and her friends they were knock out by leaking chemicals. Layfon accompanies Felli where he finally sees her smile but gets kicked by her for seeing it.

In the Legend flashback, Sae and company are still being chase only this time by large mutant dogs. The 17 Platoon takes a day off from training with Nina and Harley watching the inter-platoon matches while Layfon goes out with Mei-Shen for lunch. However, the city of Zuellni falls into a ditch, attracting a large number of Larvae-Stage Filth monsters from their nest below ground. With an invasion into the Regios eminent, Karian orders all Military Arts Students to defend the city and repel the monsters despite most of them having no experience fighting against Filth monsters. As Nina leads Sharnid and the 9th Platoon to defend the North-West section of the city, Layfon asks her to evacuate since they are no match against the bugs but she refuse and ask him why won't he fight. True to his words, Nina and 4th Platoon's weapons barely makes a scratch against them and by night time, the 4th Platoons abandon Nina and Sharnid as more bugs appear. When one of them is about to kill Nina, she is save by Layfon (who now fights to protect his friends) with a modified kei powered whip sword dite based on the weapon of Lintesce of the Heavens Blade. With his new dite, Layfon easily kills hundreds of Filth monster and with the help of Felli's power, locates the Queen Filth monster nest outside of the city and kill it. As sunrise appears and most of the bugs now "immobile" to the death of the queen, Layfon returns and collapses into Nina chest from exhaustion whom latter can only do but congratulate him.

Nina realizes her weakness after seeing that she is relying too much on Layfon and the gap of difference between their powers is too wide after losing their current inter-platoon match, which has made her reluctant to do any training with the 17th Platoon. Meanwhile, Layfon is asked by Karian to identify the Dragon Filth Monster that Felli detected in episode 3, which is a Baby-type form, a stronger variant than the ones that invaded Zuellni and agrees to kill it before the city arrives to its location and it reaches the mature stages. At the same time, he volunteers to help Naruki do police work where the latter’s official acceptance into the police force is at stake. During this time, Leerin letter arrives at Zuellni but is mistakenly delivered to Mei, who decides to deliver it to Layfon herself but chickens out and loses the letter which in turn is pick by Felli, who doesn’t give it him despite having the chance many times and decides to just put it under his bag in the locker room which is then found by Nina who decides to deliver to him herself.

Harley has created an Adamandite sword for Layfon to use on his mission to kill the Dragon Filth monster which him, Layfon and Felli keeping it a secret but their conversation overheard by Sharnid. Layfon along with Mei, Naruki and Mifi secretly follow Nina, where they find out she is secretly doing training at outskirts of the city where Naruki concludes she is doing it because of her feeling inferior to Layfon and wanting to become stronger but she collapse from over exhaustion and is sent to the hospital. While recovering, Layfon gives advice to Nina above using her Kei and how to become stronger before he departs for his mission. Layfon arrives at the Dragon’s nest with Felli giving him support from Zuellni where the Dragon has evolved to the first stages of maturity and fights it. Sharnid threatens Harley to reveal him and Nina what he, Layfon and Felli were secretly doing. As sunrise arrives, Layfon has managed to weaken the monster but his Adamandite is broken but he is rescued by the arrival of Nina and Sharnid. Nina berates him for going alone to fight the monster with his weapon current state and tells him, that he has to trust and have confidence with his teammates to defeat it. With the help of everyone, the team manages to lure the monster into a canyon with Nina as bait, where Felli and Sharnid blows the top of the canyon to trap the monster where Nina is lifted out by Layfon who proceeds to give the trapped monster the final blow to kill it. In the end, Layfon thanks Nina for her guidance and hopes to work together for the 17th Platoon where they are rescued by the arrival of Zuellni city.

Leerin meets with Linten and Savaris and is told that they will be her bodyguards for the meanwhile, because she is being targeted. Meanwhile, the 17th and 5th platoon both fight each other with the 17th platoon being victorious. Layfon gets sadden by their victories, but Nina seems overjoyed. The leader of the 5th platoon, Gorneo, seems to hold a grudge against Layfon. There is a party held for the victory of the 17th platoon. While everyone is enjoying their time, Layfon leaves the party early. At work, Nina discusses with Layfon about their victories and how she is very happy. Layfon tells her that he was never happy while fighting. There is an interuption fron the Student Council President. The student council president orders the 17th and 5th platoon to go to a lost city which was destroyed by the filth monsters and to look around to see any survivors. At the city, Nina realizes this city is Gandoweria and they fought against them two years ago with them winning. She is shocked that their city is in ruins. Layfon comments on how filth monsters are able to destroy about anything. Nina runs away to the place where they lost with Layfon chasing after her. At that place, the filth monster from the top was about to crush her, but Layfon saves her. At that moment, Gorneo arrives with Shante, his partner, and tells Nina about Layfon being a Heaven's Blade.

Gorneo reveals to Nina about Layfon's past as a Heaven's Blade. Much of Layfon's past is revealed, including his relationship with Leerin. Leerin is called the 'fated one' by the Queen of Grendan. Nina questions Layfon about his feelings about military arts, which he replies to only keep his survival. Nina refuses to accept his way of thinking. Later on, after a chat between Layfon and Felli, they are confronted by Nina who comes to her conclusion. She admits that she won't deny his way of thinking, but she doesn't understand it. Her conclusion is that Layfon and her shouldn't be in the same platoon.