Isekai Tensei no Boukensha

Tenma Otori awakens at his own funeral and is given a new opportunity when a deity from a different world offers him rebirth in exchange for helping to save their realm. He agrees and is reincarnated into a fantasy world featuring demi-humans, magic, monsters, and enchanted forests. As he matures, his supernatural abilities—such as the ability to befriend creatures like slimes and young wolves—become known to his adoptive parents, who were once skilled adventurers, and his grandfather, a renowned wizard. His peaceful life is disrupted when three unknown individuals attempt to abduct him, marking the beginning of his true journey.