Number 15 naega byeonhae.
If you say naega byeonhae three times in the bathroom mirror with the lights off, yeonjun will appear in the reflection and grant you one wish. Make sure to not look at him directly in the eyes or else he will get angry and CURSE YOU. If you do, make sure to chant "txt 4th generation leaders" or "yeonjun 4th generation it boy" then he will calm down but he'll disappear and wont grant you wish. When you're speaking to him, always say "stan tomorrow x together" never say "txt". If you do, he'll haunt you and force you to listen to maskedwolf's entire discography for the rest of your life.