Saihate no paladin has become one of my favorite manga. I had read a lot of Isekai manga and found that most of manga has genres like ecchi and harem as it looks like they set trend to have ecchi and harem with isekai genre. It ruins the manga or anime though they have good story. I am disappointed whenever read a new isekai manga.But when l read Saihate no paladin, it eases my disappointment. It has unique story unlike other trashy isekai manga. It starts with a boy born from another world in undead city and raised by undead. That makes the story unique. It's drawing is a little bad but it can be neglected with enjoyment. It has a lot of heart touching moments. I can probably say that this manga can satisfy people who doesn't like common isekai trash manga will like it.
Summary

Good point
-character development
-unique story
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Bad point
-a little bad drawing