Kami ni Tensei Shita Shounen ga Mofumofu to Isekai wo Tabi Shimasu

He travels through a world he created with his fluffy companion.

Togo, who was reincarnated as a god for some reason, decides to create his own world, which is a god's duty. He also summons the fluffy dog ​​Miru as his companion. Wanting to check out the world he created, Togo descends into that world with Miru. After spending some time there, he unexpectedly finds himself in a situation where his divine realm is taken over by an evil god and he is unable to return! In the mortal world where divine powers cannot be used, Togo and Miru journey through this world in order to somehow return to his divine realm.

(Source: Gaugau, translated)