Some people get closer around a table, some get all tangled up, some have awkward moments, some reminisce... Welcome to the kotatsu at the Hori household!

Some people get closer around a table, some get all tangled up, some have awkward moments, some reminisce... Welcome to the kotatsu at the Hori household!

The Iura siblings have an interesting relationship that gets even more interesting when... a boy comes between them in a way neither one of them wants! What are the Iuras to do?

Some people get closer around a table, some get all tangled up, some have awkward moments, some reminisce... Welcome to the kotatsu at the Hori household!

Summer vacation is coming to a close. Wakana received an SOS from Marin, who hadn't finished her homework, so he ended up helping her study at her house. They later realize that Marin had forgotten some math drills at school, so they go to get them. While alone at the school, Marin and Wakana make plans to go to a summer festival together. And when that day finally arrived...