Isekai Yururi Kikou: Kosodateshinagara Boukensha Shimasu

Sinopsis

"I'm terribly sorry!" A god was suddenly prostrating in front of Kayano Takumi. He was apparently killed by a mistake. Moreover, he can't be reborn again. However, according to god, he would be able to live in a different world, but he made a mistake again and transferred him into a dangerous forest... where he finds a pair of children and decides to take care of them. (Source: Alphapolis, edited)