well, maybe the Kokoro series? It's wholesome, good art, nice smut, age gap... In the Kokoro series:
chapter 1-2 ----V.1 - Otokogokoro (A Man's Heart)
chapter 3-7 ----V.2 - Koibitogokoro (Heart of Love)
chapter 8-9.5 --V.3 - Koigokoro (Heart of Love)
chapter 10-14.6-V.4 - Tokimekigokoro (Heart of Excitement) http://www.mangago.zone/read-manga/kokoro_kanda_neko/. Don't know if that si what you mean? If you mean guys with sexy tiddies try these http://www.mangago.zone/home/mangatopic/5648433/?cid=5649334#respond [only some complete. ] If you mean childhood friends type thing try http://www.mangago.zone/read-manga/hima_na_no_de_hajimete_mimasu/ older seme try most manga by Nanoa Bohra http://www.mangago.zone/read-manga/boku_dake_no_kimi_kimi_dake_no_boku/ Big age gap where partner waits until lover is of age http://www.mangago.zone/read-manga/sayonara_alpha/ hope this is what you meant?
wow, so much ლ(´ڡ`ლ)
I'm gonna have one hell of a reading spree with these, thank you so much~
someone, please grace my existence with a yaoi that is like this one in any way shape or form (☆▽☆)
but please only recommend completed ones, tho