Serie includes 13 albums .
Birthday Ch4 - Gemini
Birthday Ch6 - After
Birthday Ch10 - Dreams And Chains
Birthday Ch3 - Craving Of A Gene
Birthday Ch5 - Cruel
Birthday Ch2 - A Nameless Day
Birthday Ch8 - Predation
Birthday Ch7 - Native Heart
Birthday Ch11 - Normal Blood
A house bunny of revelion
Birthday Ch9 - Birth-day
Birthday Ch12 - Extra Contents
