It's winter break, which means that it's time for the holidays. This is the first time that we get to see what's going on between Hiroyuki and his mom. Hiroyuki tells us that he and his sister, suzu, are going to visit the island of Ayase, where Hiroyuki's aunt, hi-na-chan, lives. They're going to have dinner with their family, but Hiroyuki doesn't want anyone to know that he's there. He's not going to tell anyone about it, though, because he wants to keep it a secret from his mom, who's home for Christmas. He tells us, however, that the island is a secret kingdom, so he'll just keep it hush-hush. He also tells us not to worry about the fact that Hiroyuki has a crush on his sister's BFF, kaede. He wants to make sure that if things don't work out between them, that they'll have to part ways. He says that he only wants to use his crush's crush to threaten Hiroyuki, so that he can use her crush to make it look like they're not in love. He then tells us about how he came to get water to calm himself down, and how he likes it when his sister is with him. He thinks that's because she's always thinking about him, and he likes that she never asks him for anything, which is what they call "self sacrifice" .