Help

I'm searching for an Webtoon.

It's about a girl getting isekaied into another world and falling in love with an character but as they are deeply in love she learns that every full moon ( don't remember if it really was full moon but there was a condition) there is a portal opened to her original world. She learns that as there were other people in the same situation. She then goes to that portal and the ML follows her scared that she might cross that portal not knowing if she would survive, because there is no information about other crossing. Be ML of course doesn't want FL to cross. As he wants there he sees the portal and later the FL. She only throw her Clothes she had when she came to the world through the portal to get rid of them and started living there for real.


I only remember this part xD
Can someone help ?