The Water Magician

Ryou Mihara's life takes a drastic turn when he's reincarnated in the world of Phi as a water magician after a mysterious accident. Unbeknownst to him, his 'Eternal Youth' trait allows him to pass decades without aging. Ryou initially seeks a peaceful life, surviving by hunting monsters and honing his magic skills. He encounters Abel, a shipwrecked adventurer, and joins him on a journey to the town of Lune, eventually registering as an adventurer and attracting attention due to his exceptional water magic and equipment.