Isekai Konyoku Monogatari

Toya Hojo is summoned to another dimension as one of five heroes tasked with defeating a demon lord. Upon awakening his hero power, he finds it grants the ability to create a bath anywhere, which initially seems useless for battle. As he explores the capabilities of this power, he discovers it has unexpected potential. Alongside him is Haruno Shinonome, another summoned hero, and the story follows Toya's attempts to make use of his unusual ability while seeking opportunities to spend time with her.