Takahiro Nishijima (西島隆弘; Nishijima Takahiro), known by his stage name Nissy, was born September 30, 1986 in Sapporo, Hokkaido in Japan, and is a singer-songwriter, producer and actor.

Nishijima debuted as the lead vocalist of the co-ed group AAA as one of the original members – though he goes by his birth name in the group – when they debuted in 2005. While a member of the group, Nishijima also debuted as an actor, in the television drama 美味學院 (Delicious Academy) in 2007.

It wasn’t until 2014, when he debuted as a soloist, that he would start going by the stage name Nissy. The name is most likely the stylized English shorthand for his surname Nishijima.