Isekai Onsen Paradise

Komachi and the Leader of the 10 Clans (1x9)

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Ruirui, the king who rules over another world, summons Kozo and his friends to his castle, where they are currently building a hot spring resort. Komachi, who is waiting at Ruirui's side, is none other than Mayudama's senior errand princess. But Ruirui seems to have some kind of purpose...