Blood Type: O Height: 152 cm Weight: 40 Kg Birthday: January 13 Ninako is the main female protagonist around whom the story revolves. She is a very kind and gentle girl who falls in love with Ren Ichinose. When she finds out that Ren already has a girlfriend, she resigns herself to being just a friend and to quietly hold onto to her feelings. She is good at most of her subjects with the exclusion of mathematics, which she mentions a number of times is her weakest subject. Ninako is very caring and modest, willing to return any favor even if it is something small. Later on, when Andou tries to convince her to go out with him, she rejects him, saying that being in a relationship with someone she does not love is not right. She wants to remain in her feelings of liking Ren, even if they are not reciprocated, because that is whom she is in love with.
Mayuka is Daiki's older sister. Her existence is also kept low profile until a certain point where it is found that she is actually the girlfriend of the unobtainable Ren Ichinose. She has a job which is in the modelling business which she pursued for what she thought was Ren's sake and she is currently studying for extrance exams to university. After chapter 7, she has her own story arc entitled Strobe Edge: Another Light which is set when her parents are separated and where she meets Ren for the first time. As the series progresses, she becomes wary of Ninako's relationship with Ren but remains friendly toward her. She eventually realizes how much her relationship with Ren is strained: she is almost always busy and has to cancel their dates. In chapter 19 she breaks up with Ren because she now knows that Ren is in love with someone else and she doesn't want Ren to continually repress his feelings just for her. She acknowledges that nothing will ever stay the same, as she herself has changed, and that before she didn't want Ren to change and leave her.
Blood Type: O Height: 165 cm Weight: 53 kg Birthday: April 25th Favourite musician: Arashi Favourite food: chicken Manabu, more commonly known as "Ga-chan" to his peers, is one of Ren's carefree friends. His cousin owns a café, where he works. He notices Ren's feelings for Ninako early on and desperately tries to pair them up. Source: Wikipedia
Blood Type: A Height: 162cm Weight: 49kg Birthday: December 06 Favorite Food: Gratin Favorite Band: MEG Sayuri, nicknamed "Sayu" by her friends, is the mature friend of Ninako's who falls in love with Daiki, whom she eventually dates. However, their relationship is not without bumps when Sayuri becomes afraid of confrontation with Daiki when she believes he is cheating on her. Her worries about honesty in relationships comes from her boyfriend in middle school being snatched away from her. Source: Wikipedia
Blood Type: B Height: 177 cm Weight: 56 Kg Birthday: September 27 Andou is Ren's middle school friend. Andou is a big time player among the female students. However, he forms no bond or relationship with them and believes himself not fit for a relationship. However his opinion changes after Ninako has a strong effect on him and so his conquest begins. Ultimately, Ninako still picked Ren over him.
Daiki is Ninako's childhood friend whom at the beginning of the story is shown to have feelings for her. His parents divorced when they were in middle school. Due to his parents separation, he decided to live with his father, he grew attached to Ninako, which explains his feelings for her, and his relationship with his older sister, Mayuka, somehow grew weak. In later chapters, he starts dating Sayuri and eventually falls for her.
Mao is a student junior to Ninako and the others. In middle school, she dated Takumi, but only used him to get close to his best friend, whom she had a crush on. Ninako eventually discovers that she is the cause of strain between Takumi and Ren when Mao enrolls in their high school. Despite that she initially chased after Ren, she tells Takumi that she fell in love with him while they were dating and is willing to compete against his affections for Ninako in order to be with him again. Source: Wikipedia