Please Help Me Find This Manga

While I was zoning out I remembered something. I saw this manhwa panel on pinterest, it was in a classroom and there are some guys in the back and a girl in front of them drawing something. She was actually drawing the 2 guys in the back being lovey-dovey (being a fujoshi lol). I srsly wanna know where it is from. Btw I remember the girl being blonde. Thank you!

It was a yoai manga about boy who don’t know any thing about his body ( he was thinking that he was sick ) but he meet other student who start to teach him and help him how jerk off

Well the mc is a female she’s like a god or sprit that a god of water made from her tree Bc she had a will from cultivating a lot then they spent time together until they fight a dragon and the god abandons her for a human reincarnation of his previous lover so the dragon takes pity on her and they live together until the modern era where she runs a tea house I think and listens to other super natural beings stories like the golden tigers and such also she has green hair and loves collecting gold

Okay so I’ve been asking this in the other questions(?) but I can’t seem to find more of these kinds of BL stories where the seme is outgoing and the uke is kinda shy so if you have recommendations please tell me ┗( T﹏T )┛