Trunks is the son of Bulma and Vegeta. Half Saiyajin and half human, just like Gohan and Goten. Trunks was surrounded by a scientific environment. Having his mother and grandfather as scientists, he became very intelligent at science. In the future, Trunks was battling the Jinzoningen, but they were too strong, so Bulma had completed a time machine and sent Trunks back to help Goku and Gohan fight. (Source: Dragon Ball Wikia)
Yukiteru's father who is divorced with Yukiteru's mother due to a debt amounting to three million yen which he could not pay. Initially, he appears in chapter thirty claiming to just want to check on his son. It turns out that he has only returned to destroy Yukiteru's diary in order to fulfill a deal with the Eleventh. Despite his only clear desire being to free himself from his debts, he does try to save Yukki when the latter almost falls to his death, but takes the parachute away from Yukki before the tower crumbles soon after. He then stabs his ex-wife when she tries to take him to the police and escapes, though is stabbed to death himself two chapters later by the Eleventh's men. (Source: Wikipedia)
Age: Unknown, Estimated 35 years old Occupation: Police Officer Alternate Name: Fourth Likes: Justice Height: 183 cm Weight: 68 kg Keigo Kurusu is a police officer, so it follows with reason that his diary relates to his work. The "Investigation" diary gives Keigo information of future crimes and activities committed anywhere within the prefecture he is assigned to. Whether or not this means his diary can record events that will happen simultaneously in different locations is still up in the air. Its major flaw is a location issue; his diary is rendered useless at predicting anywhere outside his patrolling district. Calm, cool and collected, Keiga at first does not appear to care about winning the game. His goal is only to stop the murders being caused by it. He makes an effort to recruit some of the other diary holders into his cause, including First and Second. As the series progresses however, MurMur gives him information of his sons imminent death before he should have known to make him more active in the game. He was chosen by Deus to balance out the criminals and maniacs that are also taking part in the game. He is named after Mercury — roman god of merchants and travelers.
Future Mai is Mai from Future Trunks' timeline. She is the leader of the Resistance against Goku Black. (Source: Dragon Ball Wikia)
Age: Unknown, Estimated 32 years old Occupation: Video Game Programmer Alternate Name: None Likes: Yukiteru and Yuno's relationship Height: 164 cm Weight: 53 kg Yukiteru's mother, Rea is rarely at home because of her work as a video game programmer. Despite this, she maintains a very casual and close relationship with Yukiteru and approves of Yuno as a potential bride for her son. (Source: Wikipedia)
Takao Hiyama is a teacher in Yuki's school and is the serial killer reported within its vicinity. Not much is known about Takao character-wise, since the man was only given four lines of dialogue in the series, all related with finding and being surprised by Yukiteru. He is the Third diary owner. His "Killer" diary records the location of his next intended victim. It is a handy diary if one knew the true identity of the other diary holders and wishes to take the offensive in the game, but it does little in the way of anything else. Takao wears a heavy trenchcoat complete with a hat and mask that hides his identity when stalking prey, and carries a large machete as his weapon of choice. He is named after Vulcan — roman god of blacksmithing.
Kamado Ueshita is a large, strangely shaped woman in charge of an orphanage named "Mothers Home". Kadado is the eighth diary owner. Kamado's diary seems to be in the form of a website where she can rent out blog space to others and can automatically promote its users' rank based on the number of posts the user makes. For instance, Ouji Kousaka, in chapter twenty-five, submits enough entries to be promoted from "commoner" to "apprentice diary holder". The latter rank appears to give users the same abilities that the original diary holders possess without the drawback of the user dying if his or her diary is destroyed. The only apparent problem with this diary's effects is that the apprentices have to stay connected to the server, or else they will lose use of their diaries. She is currently in the process of having her orphanage about to be demolished as part of the Eleventh's plan. Noted by the children in her orphanage, she has no motivation to become God, where it is her "children" who wish to make her God so she won't be killed. All of her "children", who also each possessed an apprentice diary, are killed by Yuno during a failed attempt to kill the 11th. She is later recruited by the 11th, in hoping to use her Diary combined with the Holon III, a massive computer system for Sakurami, to turn the whole city into Apprentice Diary Holders. She is named after Vesta —the Roman goddess of the hearth, home, and family. (Source: Wikipedia)