invested so much wtf.

check the mangaupdates webpage for this webtoon out: https://www.mangaupdates.com/series/w32bfhs/stuck-in-my-sister-s-dating-sim

...the link to the official English translation is on Pocket Comics

THANK YOUUU

so far I have never searched for a webtoon on mangaupdates and not found a corresponding entry, so in the future go ahead and look there for either webtoon, manga, or web novel info.... but remember that it's primarily a site for English translations of manga, manhua, and webtoons so the novel entries are usually limited to ones with ongoing or complete English translations, not the ones without translations yet!