Double Trouble summary:

Hikaru in universityRules series Timeline :1) Please (5 chapters)-- Kiss (MIYAMOTO Kano)-- Kiss After2) Skies **3) Hydra 1+2+3+4 (ch1-4)4) Hydra 3+4+5+6 (ch5-6)-- Blue Film (after Hydra ch8)-- Heavenly (between Hydra ch9 and ch10-11)-- Real Thing-- Hello Again5) Lovers and Souls6) Fragile **7) Vanity **8) Dreamer's high **13) Rules volumes 1 & 214) If Winter Comes, Can Spring Be Far Behind? **15) Rules volume 316)Song Birds **17)Another Day on The Planet**18)Double Trouble**** = doujinshialso the ones in ( -- ) are doujinshi's