After that incident when Asriel spent a few days with Soda in his little Universe (the videogame rp in your book-), Asriel had finally readjusted to life at home. To life as the prince of monsters.
Alongside Frisk, he began to help open communications between humans and monsters. As co-representative for monsters, however, he became busy.
Too busy to play Soda's game. Too busy to even visit. It was saddening, to see him opening the game, less and less, until eventually he didn't open it at all.
However, this left Soda to his own devices. And after three months of no contact, Asriel woke up from a nap on the couch to hear a knock on the door. He yelled to his mother, saying that he'll get it, before actually standing and walking to the door.
When he opened it, he was shocked to see his fictional boyfriend and elder brother.
