Isekai Yururi Kikou: Kosodate Shinagara Boukensha Shimasu

Takumi Kayano, an ordinary young man, finds himself in an extraordinary predicament when he is accidentally killed by the wind god Syl. As an apology, Syl grants Takumi powerful skills and knowledge before reincarnating him in the fantastical world of Etelldia. In this new, perilous world filled with dangerous monsters, Takumi encounters a pair of young twins, Alan and Elena, whom he decides to take under his wing. To his astonishment, he soon discovers that these children possess incredible strength, capable of defeating monsters with their bare hands.

Together, Takumi, Alan, and Elena venture to a nearby town where Takumi registers at a guild, embarking on a new life as an adventurer while caring for the twins. As they face numerous challenges and uncover the mysteries of Etelldia, Takumi's bond with the children deepens. This isekai fantasy follows the adventures of an accidental hero and his extraordinary young companions as they navigate a world teeming with magic and danger.