SEIKIN

Hikaru Kaihatsu (開發 光, Kaihatsu Hikaru, born April 21, 1989), professionally known as Hikakin (Japanese: ヒカキン), is a Japanese YouTuber and businessman who is the co-founder of UUUM, a Japanese multi-channel network. A video of his Super Mario Bros. beatbox went viral in 2010, reaching over 3.8 million views by mid-September of that year. He, alongside fellow Japanese YouTuber Megwin, quit their day jobs in 2012 to focus entirely on their channels. He also collaborated with Gille, appearing in her promotions for her single "Try Again", where it is stated that he is one of the most popular Japanese YouTubers.

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