@passepartout39 Okay, do note that all of these have R18+ and NSFW scenes in them. Those can be skipped by holding left-Ctrl button.
1. Chrono Clock (NSFW CGs, nothing explicit but the ones on the menu which you unlock are R18+) - Almost all character routes that are downright beautiful, except for one which is an okay. Unlockable routes are here as well. There's a steam version which don't have the R18+ in them.
2. Katawa Shoujo (R18+ content can be disable in the menu - not recommended since some character thoughts on the current situation in the story is hidden within it) - Basically the same as CC, but the choices are NOT straightforward. Some decisions you'd think is correct would spiral you to the bad end.
3. The Devil on G-String - (has R18+ in late game) Good plot and if you like stories with twists, this is your VN.
4. Sharin no Kuni: The Girl Among the Sunflowers - Same with TDGS.
5. God Catching Alchemy Meister (R18+ in late game and when you unlock heroine costumes) - If you're also looking for gameplay, I really recommend this.
Heck, here's a bonus: Doki Doki Literature Club, but I don't recommend it if you're not yet familiar with VNs much. Also, don't look up videos on it.