Rinnosuke just don't give a fuck.

He's the master of single player mode after all.

With how old he is this is probably nothing to him.

... Or he just isn't attracted to kids.

He might be taking some mental calculations for how long until Marisa hits full physical maturity, though...

I wonder why Cirno even sits at the edge of the pool if she clearly doesn't want to get in? Why not go find Dai and play with her?

If he is as old as people say, then it would seem strange to be waiting for a human to grow to maturity. He probably views this as a father bathing with his very loud daughters. Also poor Cirno must have been playing with them before they jumped into the hot spring.

Randrey said:
He probably views this as a father bathing with his very loud daughters.

This. Even if they're not related, the one thing the fanon easily forgets is that Marisa and Rinnosuke are pretty much family.

Also poor Cirno must have been playing with them before they jumped into the hot spring.

The beloved tomboyish daughter.

Maybe Cirno is annoyed that she can't actually swim with everyone else? Ice fairy, hot spring, seems like a bad combination.

Swimming in an onsen is considered impolite.

S1eth said:
Swimming in an onsen is considered impolite.

So it's better to just chill.

Ipswich67 said:
So it's better to just chill.

Cirno's got that covered.

Lepperchaun said:
He's the master of single player mode after all.

The first step for good solo play is to make sure your anus is full of ​