I was looking for mangas to read and that's how I found this. I read it and here is my opinion on it.

Story:9/10
The story is a bit a new take as Rando got the face of the sister of Rina who she has a crush on. When she found him, she mistake him as her long lost sister and now he must take her place and try to find her real sister. It is laugh out loud hilarious as the jokes are really well put together. While it takes that shonen boy stereotype it works. While chapters are mostly filler they are the good kind and does help the story in some way. Now if I have anything bad to say it would be the ending as it did give some closer but not enough. Story is well entertaining.

Art:9/10
For art its the typical shonen art. But I like the way how the expressions on characters faces as they are really funny to see. I don't know why but the eyes kinda looks like moe eyes when I look at it. This does not affect the score, its just a claim. The character looks well enough in design as it show the artist did put some care. So in conclusion the art is great.

Characters:10/10
For character I think Rando is the best. While he is the typical mean guy protaganaist, he has to be a girl and to him that a challenge to do. The rest of the cast is likable and enjoyable in their own right. The perverted surgeon is very funny to see how he tries to make him as a girl for his sick fantasies. and Rina does show care for her sister as she has a good relationship with her. So character are a nice bunch.

Enjoyment:10/10
I'm glad I found this and I recommend this for those who like gender bender, ecchi, shonen type mangas.

Overall:10/10 Everybody needs to read this