Rec List (BL)
Disclaimer
Please read/search for the warning first before deciding to read (especially the novels)
I know men in many of these aren't even that old. Unfortunately, many modern-day age-gap BLs where one of the main characters is older than 40 are hard to find and mostly an anthology. But I can assure you, you will feel a generational gap between them.
I will mark the one that has no canon relationship but has great ship potential with italic
COMIC
Paljae
Young Bad Education (sequel)
Under The Green Light
Beloved Fool
Monster (Naoki Urakawa)
NOVEL
Star of Chaos
Scum Villain's Self-Saving System
Husky and His White Cat Shizun
Case File Compendium
Heaven Official's Blessing
TV SERIES
Beyond Evil
Obi-Wan Kenobi
The list is based on this tweet
and this is the other age gaps media I recommended, where the younger ones are a little more normal than what are listed above:
Top Gun: Maverick
My Dearest Cop
Old Fashion Cupcake
Minato's Laundromat
Kingsman
Doesn't have a clear age gap, but the Vibes is there:
The Autopsy (Guillermo del Toro's Cabinet of Curiosities episode 3) [it's eldritch alien and old forensic doctor, the tension between them was insane, my personal favorite]
Has not been licensed in english, but they're great:
残次品
谁把谁当真
On Doorstep
太岁
匠心
