Any yaoi with seme student and older uke like maybe a businessman or teacher or something ...

http://www.mangago.me/read-manga/kirepapa/ but I guess you've already read this..right?! :/

Yeah i already read it but thx

https://www.mangaupdates.com/series.html?id=10240
- devils honey
https://www.mangaupdates.com/series.html?id=222
https://www.mangaupdates.com/series.html?id=2561
https://www.mangaupdates.com/series.html?id=4737

* sorry in devils honey the seme/uke roles are "normal"
uke--student
seme-teacher

Thank you!

Ai no Kotoba wo Uragaeshi, Secret, Shitsuji wa Oose no Mama ni ch. 3, Miwaku no ringo, Aisanai Otoko ch. 5, Beauty Stock 2nd couple, Boku no Shiru Anata no Hanashi