At least if there's one thing to never worry about with Chikusa, it's him paying attention. He watches attentively as her fingers form the gestures, committing them to memory for when he has a little time for himself. When she's done herself, he sticks some food into his own mouth and writes out the kanji.

"These." He turns his own phone around. "One of them is simple, since it's just the first kanji of my name..." Hakkai is kind of dumb that way. It's really impressive.