Team DEKARIS (チームDEKARIS) was a sub-unit of the group HAPPY! STYLE, consisting of the members Ogura Yui, Ishihara Kaori, Matsunaga Maho and Noto Arisa. The unit was formed in 2009 to promote the video game Tetris Dekaris for SEGA which is arcade styled. Their main look was based off the color blocks of Tetris. They released only one album for the game before becoming inactive.
- [2009.12.17] Koi no Dekaris (恋のデカリス)
- In 2012, all members of Team DEKARIS formed StylipS.
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