#1 (in Rules Series) Teacher, Sakura connecting with Ryou, a prostitute.
Info below was copied from web site under Hydra.
Rules series Timeline :
1) Please (5 chapters)
-- Kiss (MIYAMOTO Kano)
-- Kiss After
2) Skies **
3) Hydra (ch1-6)
-- Blue Film First (after Hydra ch8)
-- Hydra dj - Heavenly (between Hydra ch9 and ch10-11)
-- Real Thing
-- Hello Again
5) Lovers and Souls
6) Fragile **
7) Vanity **
8) Dreamer's high **
13) Rules volumes 1 & 2
14) If Winter Comes, Can Spring Be Far Behind? **
15) Rules volume 3
- See more at: http://www.mangago.me/read-manga/hydra/#sthash.xNmW2mL3.dpuf
Please (Miyamoto Kano)