Sequel stories where the love rival gets their love?

https://www.mangago.zone/read-manga/my_damned_xxx/

Serious Joke
The man who can't taste
(Not a sequel but in parallel with the main story)

Ooo I actually haven’t read this, thank you for the rec I’ll give it a read

Oo they look really good I haven't read either of them yet so I’m excited, thank you for the recs(๑•ㅂ•)و✧

My pleasure <3 hope you like them as much as I did x3

So I just finished reading serious joke! It’s so good, I haven’t read many stories like this where everyone’s somehow connected to everyone else and in a really interesting way. Going to move on to the man who can’t taste, but it seems to be by a different author about different characters so could you let me know what you meant by not a sequel but in parallel with the main story?