Kimi to Sumitai Undine

Sinopsis Kimi to Sumitai Undine

Undine, the water spirit. A mysterious existence, not of human kind. An innocent, capricious, and incredibly affectionate girl. What would happen if you ended up living together with such a girl? Before you know it, your daily life becomes "over-hydrated." It's high in humidity, yet somehow, it feels comforting. A water-attribute love comedy begins!! (Source: Square Enix, translated)