[he's just here to help keep you losers honest with yourselves and each other okay that's his story and he's stickin to it.]

Okita-san has never been very appreciative of anything that I've done for him. [he says it in such a regretful tone, sad and uncertain like he has no clue in the world why that might be. a mystery...! who knows why Okita would be so bent out of shape literally every time their paths cross?

then, chiding:]

Please don't be so loud, Nagakura-san... There is no ulterior motive to speak of here.

[or rather, none he's gonna be talking about with Shinpachi.]