Tamer or cute animal/monster/familar in their side

This is also rever as isekai theme. Bcs mc be someone's else in some other planet,he used to be kinda llike scientist,he get the memory of the origib body's too. But not like isekai theme,the mc doesn't recall again n again like he is from the other world n also mc doesn't have skill. Bcs in that planet,people would be like tamer beast,n the mosnter that be pet can be anything,i wish author keep remembering us that mc is isekai ers.but i like this mc,he smart like scientist. He raise em nicely

For they who forget to see the title but just look at the title like me, this sure is lie, just like the title, the mc is an isekai ers, he mad at the goddest for not giving him any suply or skill, for the thanks to defeat the demon king, the goddest would grant wish,n mc want to go back to his world so he can make bad dish to revenge. But the origin world is chaos too,it'slike monster also exist. So he is op in his world. With that op,then then the cat,he open the restaurant n meet the hunter

Truly don't judge book by it's cover. I mean the cover is so normal,but the story is good,i love this. I kinda tired with all op chara like suddenly,i need progress,usually always attacker,but mc is defencer. He is kinda like isekai, he travel there but has non spirit to do like the others,bcs he has no skill. But miraclesly he get pet even tho it's so small n quite good at defence. Bcs of it sometimes he doesn't feel like mc,but author smart,to make the chara grow by his own with his defence

Mc somehow know how to raise the beast monster to the maximum upgrade in fast time,the monster he tame is just basic littte monster but it feels like the monster he tame is as strong as mystical beast.he get promote bcs of it n the tamed monstear getting many too later