On November 3, 2012, KUBO-C announced his marriage to a non-celebrity woman whom he had been in a relationship with for a long time. In December 2014, it was revealed that the couple had welcomed their first child, a daughter.
- For the list of songs he is credited as lyricist or/and composer in DOBERMAN INFINITY and for the artists featured in this wiki, see the Category:Songs written by KUBO-C and Category:Songs composed by KUBO-C.
- As a featured artist
- [2004.07.20] 4WD - 4-Ring Kudo (#6 "SCREAMING FOR VENGENCE" FEAT. FOUR HORSE MEN (KUBO-C / MAB / TOMOGEN FROM DOBERMAN INC))
- [2006.07.12] MINMI - "I Love You Baby" (#4 "Natural" [BACH LOGIC Remix feat. KUBO-C (from DOBERMAN INC) & SAL the soul])
- [2006.11.22] MIYABI - Highway sta (#12 "I NEED" feat. GS & KUBO-C (DOBERMAN INC))
- [2008.06.14] BIGGER DICE - Cosmos×Chaos ~Hanka Chouka~ (#7 "Homie" feat. P-CHO, KUBO-C from DOBERMAN INC)
- He has been friends with GS since third grade of elementary school
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