Isekai Yururi Kikou

Kayano Takumi is accidentally killed by a god and reincarnated. Granted a variety of skills, he is sent to a dangerous monster-infested forest in another world. In the woods, Takumi encounters a young boy and girl who look like twins, and he decides to take care of them and names Allen and Elena. Surprised by how easily they defeat monsters with their combat abilities, Takumi arrives in town and registers with the adventurer’s guild in order to provide for them. Thus begins his laid-back adventuring life as he watches over Allen and Elena’s growth! (Source: Crunchyroll)