Isekai Yururi Kikou: Kosodateshinagara Boukensha Shimasu

異世界ゆるり紀行 ～子育てしながら冒険者します～

After a god accidentally slays him, Takumi’s reborn with new skills in a monster-filled forest where he stumbles upon twins. They’re sweet, adorable, and super strong! Won over instantly, he names them Alan and Elena, becomes their guardian, and joins an adventurers’ guild to provide for his new family. And so starts his chill life of adventure, watching over Alan and Elena’s growth!

(Source: Crunchyroll)