So this might be a short review no idea honestly i did see the first OVA when it came out so i might not remember it that much also ill be splitting the story into 2 the first OVA and the Second OVA
Story: OVA 1: i personally don't really remember much of the first OVA but if i remember correctly it was basically a gym and swimming episode pretty much nothing really 2 say about it that is what you get out of also 2 compete for darling-kun's love in a swimming contest.
OVA 2: this one does have a kinda good story too it so
basically the person who had Rachnera is coming back 2 take her away and wants her back no matter what this one ill say was easily better than the first one well maybe not the easily better one but yeah it was good for sure but i personally dont wanna spoil anything but that
Art: art was the same pretty much nothing wrong with it
Sound: easily OP and ED are my fav like probably in all of anime like no kidding otherwise sound was good
Character: this might be a laundry list because of me not making a review of when the anime was done. Miia is Lamia and the first person 2 ever meet darling-kun from the series she is pretty much the main until the others come along but she is a pretty bright and cheerful one. papi is a harpy and the second one he meets so is honestly a dopey and usually forgets stuff so there you go. Centorea is a centaur and well she values her self and well her heritage and what not pretty cool but also pretty cool chick. Meroune is a mermaid and is the person who want a tragic love story to happen to her and darling-kun she pretty up and front about it aswell. Polt is actually never in this anime series but shes is apparently a "Main Character" cause of her being in the first OVA honestly but whatever she is a wolf person (dont know on how 2 honestly define her) but nice and cool person (i dont remember the OVA when i first saw it so sorry lol). Suu is a slime girl and is pretty well lewd mostly or starts it she is a kinda person (honestly that's all i can say) Lala is Dullahan and is a kinda cold and pretty out there person she the oddest (to me) of them all. Rachnera is a spider girl (too put it bluntly) and is the maybe more lewder she is pretty brash on (honestly only real thing i can think of her like no kidding) Kimihito Kurusu also known as darling-kun is the main male and the person who runs the house (per say) he is easily the kindest and also the most heart warming guy in the anime and kiss ass aswell.
Enjoyment: i easily enjoyed both OVA's but i preferred the second maybe just a litte bit more but i thought the first was just as good otherwise well there ecchi so you will get your tits and ass out of these episodes all the comedy is pretty good aswell easily loved this series hopefully it gets a season 2 down the line.
Overall: will give both OVA's a 8 they were both easily good definitely worth the watch nothing else i can say here my enjoyment basically covered it well i guess ill say the ecchi and comedy were good so yeah
There's honestly nothing to dislike about this 2 episode OVA. It has everything you would expect from the TV anime and we also get to see more development of a certain girl. I would also like to mention that there is a new girl who is introduced and if i'm being completely honest, I would want her to join the harem but then that would contrast what this anime is supposed to be about. A harem of monster girls. BUT, having a "human" girl rather than the usual monster type would be quite interesting to see if we ever get to have a Monster Musume
2nd season (which is likely).
Overall, if you love fanservice or are a fan of the Monster Musume manga/anime then you won't be disappointed.