Webcomic authors will usually say “the end” at the end of the main storyline whether or not there are extras and usually even if the extras are still about the main couple. I don’t think i’ve ever seen a manhwa with side stories end with “to be continued” when the main plot ended
Sometimes I wonder if my brain is fucked because every time someone says the translation is bad I get confused because I understand everything and don't pick up on the grammar errors
Ngl if the advice work I'ma be pissed, I did not sign up for a b-movie plot.