When the mighty water spirit falls down in of itself, Onka punches the water some more, just to make sure it's really defeated, then his head whips over to shimura.

Shimura-san? Are you alright? I have a potion somewhere... Onka offers one of his healing potions to Shimura and looks him over.

I thank you deeply to standing at mine and Leylek's side despite... Whatever has tainted us.

After the talk with Shimura Onka looks over the things that surfaced from the crabs.

We'll probably make better use of these things, then the crab did, but let's get out first.

Onka has no qualms looting the usable equipment of the fallen samurai, though he currently doesn't take anything for himself, it's more important to get out, now that the way out of the watery grave seems clear.