Youkai Shoujo is a must for all monster girls fans.
The story is about a guy who gets involved with several monster girls. There is quite a bit ecchi content. And that is where the similarities to MonMusu mostly end. Even the monster girls don't overlap.
The plot resolves around Yatsuki, a part-time worker who can see spirits and tries to get his sister's soul back into her body. One day he starts getting involved with a youkai girl and from there on the snowball effect keeps on dragging him in deeper and deeper.
Story: 7/10
While the MC has a goal, the story has kind of a "youkai of the week" sheme where after each arc companions join the main cast (till chapter 46 atm). There is quite a bit hope that this will end soon and the real plot will kick in.
Art: 9/10
Everyone who read the author's previous work, "Addicted to Curry", might be surprised at the improvement in artstyle. The character designs are easy to distguinish from each other, the heroines all have different faces. The ecchi scenes look quite a bit better too.
Characters: 7/10
The characters are nothing special. MC who keeps on being mistaken as a pervert, pervy schoolgirl, normal schoolgirl, schoolgirl lesbian, tsundere... but they don't lessen the enjoyment of the whole story.
Enjoyment: 8/10
The jokes are well done, the story isn't boring, the flow of the story is easy to read. You don't burst out in laughter, but sometimes you won't be helped but to smirk.
Overall: 8/10
Until now I enjoyed this manga much, so I hope other people pick it up and become interested in it. This is way better than Monster Musume.