Shin'ai naru Boku e Satsui wo komete
Boku Wa Mari No Naka
I read Inside Mari a while ago, but the story has still stuck with me. The title is very much true; you are thrown into this person's mind, with all the weirdness that comes with it. When an otaku becomes trapped in this high-school girl's body, what does he do? What can he do? And why is his body still alive, walking around and living like normal...?
Kakegurui Futago
While I've read a few chapters of Kakegurui - Compulsive Gambler, I can say with certainty that Twin has given me a much more enjoyable reading experience. Twin follows Mary (or Meari, if you prefer) when she first starts attending Hyakkaou. Like Yumeko, she makes a strong entrance by beating the class bully. Unlike Yumeko, however, Mary feels like she's actually trying to strategize and win. In general, Mary was much more likable as a main character, and following her journey through Hyakkaou was beyond riveting. If you wanted Kakegurui but less horny, I believe Twin has got you covered. Also, Hoshizuka is for sure gay for Mary.
Lazy Dungeon Master
I like the concept, but... it's really horny. Really horny. The MC is (thankfully) more of a feet guy, which I did laugh at, but you can feel the author's intent.
Made in Abyss