"Aki is one of the main characters in the Japanese manga ""Family-Like XX"". He is a 17-year-old high school student who is popular among his classmates and has a sharp tongue. Aki's full name is Akihiko Kawamoto, and he is the younger brother of Tomoya Kawamoto, who is a close friend of the main character, Yuto.

Aki has a rebellious side to his personality and tends to lash out when he feels frustrated. He has a complex relationship with his family, particularly with his father, who he feels does not understand him. Aki's mother passed away when he was young, and this has left a lasting impact on him.

Despite his tough exterior, Aki is actually quite sensitive and cares deeply about the people around him. He is loyal to his friends and is always there to support them when they need him. Aki is also a talented artist and enjoys drawing in his spare time.

Throughout the series, Aki goes through a lot of character development as he learns to address his emotional issues and come to terms with his family's past. He forms close bonds with Yuto and Tomoya and learns to trust others and open up about his feelings.

Overall, Aki is a complex and well-developed character who adds depth and emotion to the story of ""Family-Like XX""."