
I read the LN in a browser from someone that posted the link weeks ago or something.
I put it here: https://springofromance.com/chapter/tgmnd-119/
But I must say we are pretty close to the end. There are side stories but I'm not finished. Like you see in the link, lol.

Ji-gu thought Yeo-woon (like the both think the other will confess, lol such a cute mess) would confess on Christmas eve and ask yeowoon over the game (yeowoon still doesn't know that earth star is Ji-gu) if he had planned something for Christmas eve, yeowoon said no. Now the drama comes, one of yeowoons friends has an operation on that day so he got "forced" to visit his friend (he starts to realize that he didnt dislike jigus kiss or any other thing ji gu does). When he came back, ji gu was standing in front of the elevator and ji-gu kinda confessed or wanted yeowoon to confess so, yeah jigu starts to cry and yeowoon says he doesn't know for now if he likes jigu or not. So he asked for time (jigu is really impatient). If i remember correctly shortly after (1 or 2 chapters later) he finds out that earth star is ji gu (in the translation ji-gu means earth). It's kinda a rollercoaster even their "first time" with the slapping stuff.
But they really need to communicate better with each other.
PLS THEIR CONFESSION IS SO FUNNY! BRO LITERALLY CRIED