TONIKAWA: Over the Moon for You: Season 1, Episode 3

1 - 3: Sisters

In an anime, there will undoubtedly be an episode where the heroines suddenly decide to go to a hot spring or a bath for no good reason. Whenever this happens, whether they be in space or some parallel world, they will always end up in a Japanese rock style bath, and something will always happen during their baths. Is this the case?