I will search for it, what elements from caste heaven do you want to find? Wich one of the couples do you prefer?
the main. where the seme makes everything hard (or something like that) for the uke and the uke is not a crybabyლ(´ڡ`ლ)
I totally share this taste of you! ^^
I checked some of my lists but sadly it's so hard to find a story with a strong uke and a borderline seme at the same time :
maybe the most accurate to the request I found would be
http://www.mangago.me/read-manga/kizudarake_no_hakoniwa/
If you haven't already read Color recipe, Moritat and Hogu Hagyeongsu,
You can also give it a try with some other hate/love or blackmailing stories as these ones :
http://www.mangago.me/read-manga/venus_ni_seppun/
http://www.mangago.me/read-manga/renai_kyoutei_nukegake_nashi/
http://www.mangago.me/read-manga/junketsu_drop/
http://www.mangago.me/read-manga/ore_no_pants_ga_hitojichi_ni_torarete_imasu/
http://www.mangago.me/read-manga/houkago_edge/
I hope it's not too late, I end up rereading some of them so much my desire for a bickering pair was awaken by your request *v*
Any yaoi like caste heaven??(づ￣ ³￣)づ