Obanai and Mitsuri went out to the beach together, presumably to spend some time together. Walking towards the water, Obanai seemed hesitant to get in.

Mitsuri looked at him with an raised eyebrow,

Mitsuri:”You do swim, do you not?”

Obanai:”Oh, I swim, pretty girl— p-pretty good, pretty good, good, swim good, pretty good, I swim pretty good…” He stuttered a bit, embarrassed.