Recsss me some Bl stories that connects to each otherr

"the origin of species" and "the evolution of species"
"kiss me liar" and "Kiss me if you can" (although KMIYC is much better)
"Master, Please Leave a Mark" and "Chairman, Cut the crap"
"omega complex" and "alpha trauma"
you can see cameos of "honey trouble" characters in "K's secret" and vice versa
"poyun" and "breaking through the clouds 2: swallow the sea"

links? cant find them

The whole Kuroneko Kareshi series, it also includes Fukigen Kareshi and Wagamama Ouji wa Neko wo Karu and tenuously Neko-Ka Kareshi no Ayashikata
https://www.mangago.zone/r/l_search/?name=SAKYOU%20Aya

For your love and form of sympathy
https://www.mangago.zone/r/l_search/?name=Park%20Nodeok

I can't remember if they're yaoi or shounen ai, but 23:45 and 23:45 RE are amazing reads, especially 23:45 RE.