Ofc “rainbow city” (I’m like 90% sure Dr.Seok is older than Major Kwak)
Taboo temptations
The melancholic conman
Dear teddy bear
Under the green light
Please candy
Form of Sympathy
On Doorstep
Kings Maker (not really sure)
How old are we talking
My old man list
https://www.mangago.zone/home/mangalist/2558323/
Some that have what you're looking for
Boku no Omawarisan
Wolf In The House
Ii Ko ni Dekitara Hometekure
Old-fashioned Cupcake
Joou to Shitateya
Ikeoji Monster to Zettai Reido Danshi
Love-Shower for the Twisted Flower
doesnt matter i love old man yaoi too :33
older uke x younger seme trope recommendations? ive already asked this before but ive read almost all the past recommendations so i need new ones T^T