Home onsen'd be awesome in you guys' style. Man, can you imagine? I bet it'd be like some cool stone thing.

[The flame is in fact flame... more specifically, the fire keeping the sukiyaki heated. There are also bowls of rice, and a couple of drinks in plastic bottles from the conbini, and a few chocolate puddings that he absolutely put in wine glasses because the pudding cups got wrecked with the last batch,]