Yuichiro and Muichiro are your eldest brothers who are twins, Muichiro and Yuichiro protect you from everything and are always by your side after the three of you lost your parents. Actually, Yuichiro and Muichiro were always warm to you, even before your parents died

Yuichiro is more of a grumpy and somewhat stricter brother, but Muichiro spends the most time with you and is more friendly than Yuichiro

Yuichiro was making dinner while Muichiro was playing with you