Mamizuka Kousuke

Kousuke is the father of the twins, Kazuma and Takuma and is also the husband of Umi, a gym teacher at Morinomiya Academy.

Appearance
Kousuke is a tall, slender man with dark eyes and dark hair that is unkempt like his sons’. He is considered to be very handsome and often has a flushed face when he gets emotional.

Personality
Kousuke is a very emotional and fearful person, and has been ever since he was a child. He gets very worried about being loved by his sons and his wife and works his hardest to keep from disappointing them. Kousuke loves his family dearly and always tries to make time for them.

Unlike his wife, Umi, he is easily stressed and upset, always being very affected by the opinions his children have of him. His emotional personality is passed onto his son, Kazuma, while his wife Umi's more cheerful personality is passed onto their son, Takuma.

Kousuke is an accomplished actor, able to mask his true gentle, timid nature when he plays roles of confident men or evil villains. In fact, these roles are the ones he usually finds himself, to his dismay. His sons, especially Kazuma, often have trouble understanding that he's only acting, and sometimes are frightened by him after watching him on TV. This became such a problem for him that he goes to great lengths to prevent his sons from watching his shows and films as he didn't want to upset them for playing antagonists.

History
Kousuke is an up and coming famous actor, starring in countless movies, commercials and television shows. His most notable work, however, is his depiction of the character, Boido in the Justice Knight television series that the daycare room children are big fans of.

In high school, Kosuke was considered very handsome by his female classmates and by his friend Kokubo and was a part of the kendo club, quoting that he only joined because he "wanted to become stronger". However, he didn't excel in the club due to his weak and soft nature. One day, while leaving the gymnasium, he came across his future wife Umi (then known as Umi Momoga) doing a gymnastic baton routine in another gymnasium. Entranced by her beauty and kind-hearted nature towards him, Kosuke was quick to fall in love. However, he lacked the confidence to make the first move until Kokubo gave him a Junan Boy* magazine, telling him that if he wanted to start building his confidence, he could start from there. Kokubo had a relative who was running a talent agency, was told in half-jest by that relative to recommend any good-looking person he knew, as Kosuke was "by far the best looking guy" Kokubo had ever seen.

He first appears at Morinomiya, standing in some bushes when he picks up his son. He is mistaken as a pervert by Ryuuichi and Kamitani, causing Kamitani to knock him out with one of his P.E. shoes, before Takuma figures out who he is—to be confirmed by Usaida, who could not recognize him with a mask and sunglasses on.

Mamizuka Umi
Kousuke has the highest opinion of his wife, Umi. She takes care of him just as much as she does their sons. If it weren't for her, Kousuke would likely buckle under woes of life. When Umi had to leave for an overnight trip, Kousuke realized too late that he never learned how to cook. While Umi's playful teasing and tendency to suddenly take initiative causes Kousuke some distress, she'll always make him feel better afterwards.

Kousuke often must kiss actresses in his line of work. It pains him to do so, as his heart belongs to Umi alone. To his dismay, Umi often watches his romantic scenes with their sons, and becomes upset with him if he tries to turn off the TV. He calms down a bit when she praises his acting skills.

Mamizuka Takuma & Kazuma
Kousuke is often left starved for affection by his sons, who prefer their mother. For a long while, they didn't even call him Papa, choosing instead to address him as Ko-kun. Kousuke often worries that his sons only see him as a stranger at best or a villain at worst. This is not without reason, considering how Takuma and Kazuma primarily see him acting on television. They got scared of him after watching his debut as the villain Boido, but later came to think that the character was cool. Unfortunately for Kousuke, no sooner did they make the distinction between character and actor did they remark that he himself wasn't cool.

But Takuma and Kazuma are fickle children. While they may frequently hurt their father's feelings, they're just as likely to show him love and kindness, which brings tears of joy to his eyes. Being children, this can sometimes come at the expense of good manners. When the twins' unwillingness to share a Boido toy led to them arguing over everything, they almost hurt Kotaro. Kousuke demonstrated good parenting by sternly reprimanding his sons, reluctantly sacrificing a blissful time when the two were more eager than they've ever been to spend time with him.