"Your chest is - enough - as it is."

"—you know I wasn't expecting it to be that distracting."

"Boys normally aren't this distracting! I wouldn't have guessed it'd be this bad either, though maybe it's because I'm thinking about things. Since. I do still remember what I saw. Earlier."

"What you saw? You'll perhaps need to be more specific, I'm sure I don't know."

Ahhhhh he's doing this on purpose.

"You with your trousers off is eminently distracting. Transcendentally distracting. Eternally distracting. Also your culture's underwear is odd and I didn't mean to say that." Tetsuma is achieving new and never before seen shades of red. 

"—my underwear? What's odd about it?"

"Um." He buries his flaming red face in his hands. "It's - tighter? Than I'm used to. Like, men's underwear is usually fundoshi, which is a strip of cloth wound about the legs, and unless you're exercising the end of it's worn hanging down in front, and even if you tuck the ends in, it covers more in front, though I think less in back."

He rubs his chin. "Having a hard time imagining that, perhaps you could show me?"

Ahhhhhhhhh

"I'll wear it to swim. It's normal swimwear." 

"Okay!" he says brightly.

He unburies his face. Still bright red, though less 'about to spontaneously combust'. "So, um, tomorrow for swimming? I can find a good place on my morning run."

"Sounds like a good idea!" Kiss!

Kiss! 

Then: more games? Or they can do something else.

Board games! He wants to try that harder one Tetsuma mentioned.

The game's called Go, and the rules are actually fairly straightforward (the strategies are where it gets ludicrous), and there's a lot of similarities to what they've been playing. You place the stones on where the grid lines intersect, and the goal here is to surround more territory than your opponent. Stones in a horizontal or vertical line are treated as one stone. Surrounding an enemy stone so it has no adjacent free spaces means you capture it. You get points for intersections under your control and for stones captured.

You can't make a move that essentially resets the board - like, if Tetsuma captures Dayo's piece, Dayo can't immediately capture the piece Tetsuma used by putting his piece back where it was (Tetsuma demonstrates what this would look like). Though you can have two situations set up like that and get stuck in an eternal loop.

The game doesn't have a set end; instead it goes until they decide to call it quits.

...he can totally think of a variant of this game's scoring rules but Tetsuma will probably spontaneously combust if they play it.

Almost certainly.

They can play Go, then. Shirtless.

Tetsuma keeps his shirt on! And becomes gradually less - awkward - about Dayo's shirtlessness.

Same rule of kiss-per-captured-piece, lots for a win?

Yep!

He's getting back in the swing of the game.

They may or may not get into a ko fight (the eternal capturing loop mentioned earlier) at some point. Which is fine.

Tetsuma's definitely at an experience advantage, even with the distraction.

Yeah he's mostly just learning the game at the moment.

They'll probably only have time for one or two rounds before dinner, which isn't served until dusk. (If they want to eat earlier, there's small finger-foods they can take up to the room.)

He doesn't feel particularly peckish so up to Tetsuma.

Yeah he's fine waiting until dinnertime. Which is fluffy, buttery grain with raisins, cactus salad, and/or aforementioned finger foods. Drinks are mostly teas. There's a buffet set up in the courtyard, and people are mingling amiably.