Responses
https://www.mangago.zone/read-manga/dangerous_convenience_store/
https://www.mangago.zone/read-manga/crucial_point/ (idk about age but the seme def more mature)
https://www.mangago.zone/read-manga/night_of_the_unmarked/ (seme not that old but still huge age gap)
Anything similar to this? https://www.mangago.zone/read-manga/my_sadistic_master/ doesn't have to be bdsm but something with a big age gap (older seme) (づ￣ ³￣)づ