" Bad boys can cry too "
When the well-known guy who was not afraid for breaking rules and everyone's heart, already found the one who would change his life completely and became his favorite addiction.
"It has been said that true love can trick the serum, if you really have true love, you will find each other again."
Or
In a country where being gay is punishable by having your memory wiped, Minho finds out that the only way to keep Jisung is to love him so much that the serum doesn't work.