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A sample of a cover song by Jack
"Iroha Uta", composed by Ginsaku

Jack (じゃっく) is an utaite known for a voice that is said to be mild, yet attractive. He collaborates mostly with Asamaru, forming the pair Asamack (あさまっく).

Affiliations and Collaboration Projects[]

  1. Sennen no Dokusouka (Fuuga Naoto album) (Released on June 01, 2009)
  2. Starry Sky (Released on May 09, 2010)
  3. enhAnce (Released on July 07, 2010)
  4. Join us/Somatic Delusion with Asamaru (Released on December 29, 2010)
  5. Gift with Asamaru (Released on January 12, 2011)
  6. Moratorium (Released on June 15, 2011)
  7. Stray Sheep with Asamaru (Released on July 06, 2011)
  8. Fire◎Flower/COLOUR with Asamaru (Released on August 12, 2011)
  9. Kami Kyoku wo Utattemita 5 (Released on September 07, 2011)
  10. Material with Asamaru (Released on September 14, 2011)
  11. Doushinen (Released on October 19, 2011)
  12. Ghost Radio with Asamaru (Released on December 07, 2011)
  13. POLYHOLIC (Released on December 31, 2011)
  14. Stand by xxx with Asamaru (Released on March 14, 2012)
  15. Ayatsuri Pierrot no Monogatari with Asamaru (Released on May 23, 2012)
  16. Tobidase! Asamack Radio with Asamaru (Released on December 05, 2012)
  17. Sora no Yakusoku ~ Niji & Gemini ~ with Asamaru (Released on December 29, 2012)
  18. Parallel Link (Released on December 31, 2012)
  19. Tobidase! Asamack Radio 2 with Asamaru (Released on March 06, 2013)
  20. Tobidase! Asamack Radio 3 with Asamaru (Released on April 03, 2013)
  21. Recollections ~ ASAMACK ANISON COVER ~ with Asamaru (Released on July 03, 2013)
  22. ADEUTA (Released on May 29, 2013)
  23. Burari Asamack with Asamaru (Released on October 30, 2013)
  24. Burari, Asamack 2 ~ Setonai Ryojou hen ~ with Asamaru (Released on January 01, 2014)
  25. Renovate with Asamaru (Released on March 12, 2014)

Collaboration Units[]

List of Covered Songs[]

  1. "Melt" Nv.gif -Band Edition- (2008.03.02)
  2. "Cantarella" Nv.gif (2008.03.07)
  3. "Karma" Nv.gif (2008.03.22)
  4. "Tsuki no Waltz" Nv.gif (Waltz of the Moon) (2008.04.20) (Deleted)
  5. "Mozaik Kakera" Nv.gif (2008.05.27)
  6. "Black★Rock Shooter" Nv.gif (2008.06.22)
  7. "Sennen no Dokusouka" Nv.gif (Thousand Year Solo) (2008.07.18)
  8. "Ishidatami no Akeki Akuma" Nv.gif (Scarlet Demon Of The Pavement) feat. Jack, Jegyll and ChouCho (2008.09.07)
  9. "Cendrillon" Nv.gif feat. Jack and ChouCho (2008.10.04)
  10. "Alice in Dreamland" Nv.gif (2008.10.29)
  11. "Ningen ga Daisuki na Kowareta Youkai no Uta" (The Song of a Broken Youkai Who Loved a Human) feat. Faneru and Jack (2008.11.13)
  12. "Gokurakuchou - bird of paradise-" Nv.gif (2008.11.16)
  13. "Ti Amo" Nv.gif feat. Jack and Hiradon (2009.01.03)
  14. "Fullchin★Boogie" Nv.gif feat. Jack, Tourai and Jegyll (2009.01.25)
  15. "magnet" Nv.gif feat. Jack and Asamaru (2009.05.12)
  16. "Chitose no Dokusouka" Nv.gif -Arrange ver- (A Thousand Year Solo Song) (2009.07.23)
  17. "Norainu Shissou Biyori" Nv.gif (Fair Weather For the Stray Dog to Run) feat. Jack and ChouCho (2009.09.10)
  18. "under the darkness" Nv.gif (2009.12.17) (Community only)
  19. "Iroha Uta" Nv.gif (2010.04.11)
  20. "Doukoku no Ame" Nv.gif feat. Jack and Tourai (2010.05.11)
  21. "Shinpakusuu #0822" Nv.gif (Heart Rate #0822) (2010.10.01) (Community only)
  22. "Juu Mensou" Nv.gif (Ten Faced) feat. Jack and Faneru (2011.03.31)
  23. "Blackjack" Nv.gif (2011.07.29)
  24. "Paradichlorobenzene" Nv.gif feat. Jack, Faneru and Asamaru (2011.12.13)
  25. "Merry Merry" Nv.gif feat. Jack, Faneru and Asamaru (2011.12.24) (Not in Mylist)
  26. "Mokyu Mokyu" Nv.gif (2012.02.14)
  27. "Senbonzakura" Nv.gif -Arrange ver- feat. Jack and Asamaru (2012.06.12)
  28. "Nico Nico Halloween Party" Nv.gif (2012.10.16)
  29. "Carnival" Nv.gif (2013.04.17)
  30. "Koshitantan" Nv.gif (2014.03.02)
  31. "thanks" Nv.gif feat. Asamaru and Jack (2014.03.10)
  32. "Ambivalence" Nv.gif feat. Asamaru and Jack (2018.01.11)
  33. "Mosaic Kakera" Nv.gif -Remixed 2018 ver.- (2018.07.12) (Community only)
  34. "FLOWER TAIL" Nv.gif (2019.03.02)

Commercially Featured Works[]

  • "Saki Midare Hana no Chiruramu" with Asamaru - Released on March 12, 2014
    • Opening of the PSP game Iza, Shutsujin! Koisen Dainimaku ~ Echigo Hen ~

  • "Oborozuki" with Asamaru - Released on March 12, 2014
    • Ending of the PSP game Iza, Shutsujin! Koisen Dainimaku ~ Echigo Hen ~

  • "skyrocket" with Asamaru - Released on March 12, 2014
    • Ending of the PSP game Hatsukare * Renai Debut Sengen!


For PointFive (.5) albums see here
For Asamack albums see here


Jack's twitter avatar
Jack Iroha Uta 1.png
Jack as seen in his cover of "Iroha Uta"Nv.gif
Illust. by Suo (すお)
Jack Paradichlorobenzene 1.png
Jack as seen in his collab cover of "Paradichlorobenzene" Nv.gif
Illust. by Haruma (はるま/春馬)
Tourai (left) and Jack as they appear in their cover of "Doukoku no Ame"Nv.gif
Illust. by Keito (ケイト)
Jack fingers peacesign.png
Jack's fingers
Jack adeuta.png
Jack as seen on ADEUTA
Illust. by Gin (ぎん)


  • He got his name from Disney's Jack Skellington.[citation needed]
  • He does not like chocolate; however he does like sweet things.[citation needed]
  • He lives in Osaka.[citation needed]
  • His favorite singer is Namie Amuro.[citation needed]
  • He can play the flute.[citation needed]
  • He is a gamer and an otaku.[citation needed]
  • He used to hold Asamack Radio every night with Asamaru (nowadays it's few times a month)
  • He personally feels more relaxed while talking to people who are older than him.[citation needed]
  • He always says that he doesn't explain anything to his parents because it's too troublesome to go into details.[citation needed]
  • He stated that he can't whistle.[citation needed]

External Links[]