Gyaaaa!? So...somebody save me!

...What are they doing?

It's a kind of expression of love

Souryuu

haha...

Is making a mark on someone considered an expression of love?

Yes... it's sort of like marking your territory, I guess.

Midnight

Bathroom Bathroom ...

...Huh? Taihou-san...

But nothing's down that way but the admiral's room...

Afterwards, the misunderstanding was cleared up properly.