If you wanna go deep, the recommendations I made to a bitch elsewhere are fine:
Endo's Tanpenshu
Watashitachi no Shiawase na Jikan
Onani Master
Then, once you're done with the short 'n sweet 9-10/10 area, jump into the deep end and read true classics EVERYONE should read:
Maison Ikkoku
Please Save My Earth
(Going on your "Kupo" in another post, you're probably too stupid to have good taste, but I try with the ignorant, as much as God allows...)