KyoZana✿’s summary:
“Since Yutaka's a kid, people around have complained it's boring eating with him. One day at the park, suddenly there's a boy stares at him eating with stomach *Growls*. It turns out the kid really loves the rice ball bomb Yutaka made & comes back with big bro to ask how to make & also invite him to eat at home together.“
Bokura no Shokutaku