[It's the perfect moment for Kashuu to leave, and as it drags out and nothing happens, Souji is almost afraid that the sword can hear the mantra of don't leave don't leave please don't leave me. It's a silly way to feel about someone just walking out of a room and leaving someone else to learn how to get drunk on their own, isn't it?

(It's not just about Kashuu leaving the room. He's honestly afraid now, terrified, that Kashuu is going to backpedal out of the whole relationship which obviously is painful and awkward for him right now. His help and support has meant so much to Souji, and somehow he never realized how much he'd started to need it. Please don't leave.)

He's acting silly. This is silly.

(He's just Kashuu's former master, right?)

...Did Kashuu just say something?]

I- ah... Yes. Please. That would be very kind of you. Thank you. [So stilted, so free of the usual gushing and compliments because he's not sure that Kashuu wants them right now. That they wouldn't just make it worse.]

...It's the kind of thing you probably need to learn how to do eventually, huh?