??

by monster you mean anime?

oh no, it's a manga
https://www.mangago.zone/read-manga/monster_and_ghost/

i just need similar stories like this

https://www.mangago.zone/read-manga/majo_to_neko/

Not a monster and ghost sadly but a witch trying to runaway and his familiar witha misunderstood past that find comfort with one another.. similar?