Official On/Off

http://www.onoff-net.com/

On/Off Profile

Profile

• Name: 坂本直弥
• Name (romaji): Sakamoto Naoya
• Profession: Actor and singer
• Birthdate: 1983-Dec-10
• Birthplace: Fukuoka prefecture
• Height: 171cm
• Weight: 50kg
• Blood type: O
• Family: Younger twin brother (Sakamoto Kazuya) 

Profile

• Name: 坂本和弥
• Name (romaji): Sakamoto Kazuya
• Profession: Actor and singer
• Birthdate: 1983-Dec-10
• Birthplace: Fukuoka prefecture
• Height: 170cm
• Weight: 50kg
• Blood type: O
• Family: Older twin brother (Sakamoto Naoya)

Source :  http://wiki.d-addicts.com/Sakamoto_Kazuya and http://wiki.d-addicts.com/Sakamoto_Naoya

On/Off

1st Single:
Yokogao
Oredake no Muse
Crazy about you

1st Single (Major Debut):
Eien no Setsuna
Wasurarenu Hitomi

2nd Single:
Futatsu no Kodou to Akai Tsumi
Signal
Asayake
Sagashimono

3rd Single:
Rondo (Rinne -Rondo-)
Rainy Lady
GO∞2
Ikusen no Nemuri no Hate

4th Single:
Hanakagari
Hanekaesu Yuuki

1st Album:
Soukou no Genseki
Eien no Setsuna
Ikusen no Nemuri no Hate
Hanakagari
Signal
LOST
Futatsu no Kodou to Akai Tsumi
twinkle
Rainy Lady
Sagashimono
Rondo
Kokuhaku
Kou・Shoryu/Yakusoku no Hane White Feathers (Fuma no Kojiro Character Song)

5th Single:
Butterfly
Connection
Butterfly (TV Size Ver.)
Butterfly (Instrumental)

6th Single:
Hajimaru no wa, Sayonara
Kimi ga Inakerya
Hajimaru no wa, Sayonara (Instrumental)
Kimi ga inakerya (Instrumental)

* Hajimaru no wa, Sayonara TV Size Ver. included in Regular before instrumental tracks.

7th Single:
Akatsuki
Tsuki Sasare! Dart
I loving... - Boku no Ai-
Akatsuki (Instrumental)
 

Source :  http://myanimelist.net/forum/?topicid=67221