The Yuzuki Family's Four Sons 16

Hayato, the eldest son, wise and takes care of the family. Mikoto, calm and collected, with a fondness for his younger brother. Minato, the honest and energetic third child. And finally Gakuto, an elementary school child with a good head on his shoulders, an early life master. They are the four Yuzuki brothers, who support each other after the sudden death of their parents. After befriending Shota, a fourth-grader, Gakuto attracts his little brother's gloomy stares. Hayato, on the other hand, realizes even more how important his childhood friend Miiyan is to him. Or finally, at Minato and Mikoto's middle school, it is decided that they will wear costumes for Halloween! But when there's a party involved, problems are always just around the corner...