君と棲みたいウンディーネ, Water Spirit Beside Me, The Undine I Want to Live With, 너와 살고 싶은 운디네, La Undine con la que quiero vivir, Nàng Undine mà tôi muốn sống cùng, 與妳同住的溫蒂妮

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!!