Here comes the ten interactions Yamada Ryosuke and Shida Mirai would have, only if they were guested together and were allowed to interact cause there is nothing wrong about it.

Yamada Ryosuke and Shida Mirai play in a game called Spill Your Guts or Fill Your Guts hosted by Uchimura Teruyoshi which is about choosing between eating disgusting snacks or answering daring questions.  

After his uncle's marriage, 18 years old Yamada Ryosuke decided to move out from his uncle's house where he lived for five years after his mother's death. Deciding to go back to his parents' house which has been empty for years, he was surprise to find out that a girl has been occupying the old house. With the girl insisting she is a legal tenant and refusing to leave, Ryosuke could do nothing but share the house with her leading to a cohabitation (?).  

Let this be their last dance.

Hiro and Hino are fraternal twins who are completely opposite from each other. Upon their parents' death some things (and almost everything) should change in their lives, and it includes Hino being more timid and Hiro to stay strong for his twin sister. Later, another incident made a little twist in their already changed lives.