I dunno why I'm onboard with this idea so much but I'm gonna let it loose:
Omegaverse Phaidei, Aventio AU
Note: This is gonna be messy but trust the process
Phainon, Aventurine, Dr. Ratio were all classmates in highschool with Topaz a year younger and Jade a year older.
Aventurine, Topaz, and Jade had a business already ongoing that made them rich to the point that they caught the attention of IPC Inc.'s Diamond then getting absorbed into the Stratagems.
Dr. Ratio's a scholar who got scouted by the Intelligentsia Guild.
Phainon was the school's superstar turned antique appraiser and cafe barista as his jobs.
Everyone loves him, basically dotes on him cause even though he's an alpha he's pretty chill with everyone, never aggressive towards other alphas, never looked down on betas and omegas.
So Jade a fellow Alpha sees him as an interesting specimen, everyone else feels her treat him more like a puppy. Omega Ratio also shares this sentiment and tends to be comfortable to loop him into testing Alpha based products whenever his own Alpha Aventurine is not available to do it. Topaz as a Beta tends to seek Phainon out since his control on his scent tends to calm her down.
Phainon's fine with this but he knows his highschool friends tend to be pretty obsessive when doting on him, so when he becomes obsessed with his alpha cafe coworker at Flame Chase Cafe Mydeimos he makes sure his pathetic pining doesn't reach their ears. He's already having problems with the teasing by his boss Aglaea and co-barista Castorice.
And Mydei while weirded out that Phainon likes him even though they're both Alphas, he wrestles with his growing feelings and doesn't reject him.
There's a part 2 of this with Alpha Sugilite being a whore for Phainon even though he rejected him already and comes to the café to checkout the Alpha rumoured to finally crack Phainon.
TLDR: Basically everyone loves Phainon and are basically happy he gets to experience falling in love for the first time.