SO THEY'RE HALF ELVES/FAIRIES!? i understand that the grandfather went there but the fact ...

SO THEY'RE HALF ELVES/FAIRIES!? i understand that the grandfather went there but the fact He is with Another race!?

This is probably why he can understand different languages and the spirits.

Also with rice cake letting his sister touch him ,Since no other people can touch him

I'm more curious now how She went to the Modern world or there's already a gate ,Did she make the gate?

Also peak Manwha without any romance,This is how you make a GOOD story without some random romance subplot to make it interesting