girl what. Where did chapter 5 come from ??? I'm so confused it's unrelated from the manga...

I just realized it said "one-shot" before the chapter started, but it's still so out of place. Even the placement is random

Usually that's where manga stops getting serialized, so they tend to add other couples in one shots towards the end of some yaoi manga magazines, but this particular one got a continuation (is my assumption), so it made it stand out more.