Isekai Yururi Kikou: Kosodateshinagara Boukensha Shimasu, Boukensha License wo Hakudatsu sareta Ossan dakedo, Manamusume ga Dekita node Nonbiri Jinsei wo Ouka suru Recommendations
Both manga are set in a medieval fantasy world where the main lead takes care of a child (in Boukensha License ...) and small twins (in Isekai Yururi Kikou....). Both are laid back but sometimes in "Isekai Yururi Kikou" the situation gets a bit complicated.
