Responses
Depends bc their first appearance tg was around ch.16/17 and they start the pumpum at 21 I think and after that like every 3/4 chapters they meet up, or you can skip through that and go to s2, but personally I only read this manhwa for 2nd couple and I usually start from ch.16 and skip the main couple chapters

Wanna read sec couple. Is that from cover?
From what chapter I have to start?