This story reminds me of 2 other webtoons Smyrna and Capri and Ero Wizard's Research Journal
https://www.mangago.me/read-manga/smyrna_capri/
https://www.mangago.me/read-manga/ero_wizard_s_research_journal/
Also of Plaything!! https://www.mangago.me/read-manga/plaything/
Probably got this chapter 100x by now