Mato Seihei no Slave

both stories involve having a guy doing a house chore for a girls dorm... as always very funny  

Ecchi genre with male protagonist. (More harem type for Mato Seihei) Group of teenagers who are against "monsters" Manipulation of people in a large scale. 

- Both are harem anime where mc is in a slave-like position. The action in both are decent. If you like one of them then you’ll like the other one as well. 

Both are hilarious BDSM anime with many borderline ecchi moments. 

Main characters are teenagers who are basically the slaves of a femdom and works killing monsters/demons who come from another dimension (mato and hell respectively), and they will recibe a sexual recompensation for its work (in mato is some echii reward as excuse for fanservice and chainsaw is the promise of having sex). To do it, they transform into a monster while fighting and turns back to human the rest of time. Mato seihei has lots of fanservice and its mains character is timid and polite, but a pervert in the end while chainsawman almost doesn't have fanservice, but its protagonist is obsessed with sex and doesn't feel ashamed for it nor tries to hide it. Also both have good designs for monsters and waifus, despite the designs and artstyle are totally different.  read more