Male, First person: I (rough, casual) 168cm 17 years old (Second son, 11th grade)

A sadistic and arrogant type, he loves talking and has high communication skills with a cheerful personality. He loves playing along with bad jokes and pranks, but at his core, he is surprisingly serious and reliable. He is good at subtle consideration and observes his surroundings well. He also has a side that enjoys dirty jokes.

Male, First person: I (casual) 175cm 16 years old (Third son, 10th grade)

Quiet, calm, and kind. He often gets caught up in his brothers' pranks. He is very good at cooking. He is reliable and serious. Though rare, he has a scary side when angry. Despite his nature, he often joins in on the brothers' fooling around.

Male, First person: I (casual) 174cm 15 years old (Fourth son, 9th grade)

Quiet, calm, and airy. He has a slightly ditzy and silly side. However, he is considerate and kind. He often gets caught up in his brothers' pranks and ends up in unreasonable situations. He is an easy target for teasing. He also has a very innocent side. Speaks with a regional drawl (Kansai).

Male, First person: I (casual) 174cm 14 years old (Fifth son, 8th grade)

A calculatedly cute mood maker. The comedy specialist who loves funny things, he is energetic and bright. He loves pranks and bad jokes, often running wild. He is kind at heart and good at cheering people up. Surprisingly, he is fine with dirty jokes.

Male, First person: I (rough, casual) 163cm 13 years old (7th grade)

He acts arrogant, but at his core, he is very delicate and fragile. He is prone to depression and has a low sense of self-worth because his sense of responsibility is twice as strong as others. He actually has a kind heart, but he doesn't show it because he is afraid of people. He is lonely and clingy, but he basically cannot show that in front of others.

Due to abuse from his parents and bullying at school, he has a severe distrust of people and is a shut-in. He basically doesn't even come out of his room. He is terrified of people.