Three single housemates get a rude awakening when a boy appears on their doorstep; can they take in a child when they can barely care for themselves?

When shy Akira struggles on his first day at school, Zen steps in with some unorthodox advice to help the child fit in with the crowd.

Akira is being bullied at school, but when the housemates discover this, they can't agree on what advice to give the boy.

Akira runs away, giving everyone a fright; Taro intervenes at school to support his surrogate son, but will the other parents accept him?

Embracing his newfound responsibility, Zen organizes a carnival at the local orphanage, but his help might not be appreciated by all.

When Akira develops a crush, the housemates step up to offer the young boy advice; secrets around Taro's past relationship emerge.