Manhwa/manhua: Someone else's BL, Here U are, The Last Zombie, Cinema Next Door.
Manga: Kanjou Spectrum, Sannin Gurashi, Ani no Anashi,
https://myreadingmanga.info/penguin-frontier-smile-eng/ (since she's innocent and it's only on MRM though it's shounen ai, the ads might be an issue then.)
http://www.mangago.zone/read-manga/kurayami_ni_strobe/
http://www.mangago.zone/read-manga/gunjou_no_subete/
http://www.mangago.zone/read-manga/harenochi_shikibu/
http://www.mangago.zone/read-manga/kimi_wa_natsu_no_naka/
http://www.mangago.zone/read-manga/endou_kun_no_kansetsu_nikki/
http://www.mangago.zone/read-manga/theo/
http://www.mangago.zone/read-manga/kanemochi_kun_to_binbou_kun/
http://www.mangago.zone/read-manga/blue_blue_blue/
http://www.mangago.zone/read-manga/merry_checker/
http://www.mangago.zone/read-manga/star_x_fanboy/
One of the most fluffiest things i've ever read!!!!
It's so cute!!!! (≧∀≦)
once you think she already read enough fluff, start suggesting some light smut to her. the ones with minimal sex scenes and then once she gets used to it, give her to GOOD stuff and I mean intense fucking lol jk. it's up to you but i lowkey think she already encountered some bl with intense scenes because it's inevitable to come across those.
goodluck on your sister's journey on being one of us, dirty creatures.
Okay, so my little twin sister has been getting into yaoi recently (I might've triggered it due to my constant fangirling. Sorry, my smol bean). She's quite the innocent one, despite the fact we're twins and are of the same age. Anyways, she wanted me to recommend her some BL, so I didn't want to traumatise her by starting with something really intense, so I recommended her Heesu in class 2, Cherry Blossoms after winter and Fools (all of which only contain cuteness instead of sexiness). I'm running out of options and don't know what to recommend next, so I'd love it if anyone could recommend me something subtle and cute (it can contain some kissing or hugging). Thank you!!#