Aika Tsube

Aika Tsube is one of the main heroines of Ore, Twintail ni Narimasu series. Aika is Sōji Mitsuka's childhood friend, she lives the next door to him, and their room are heading the opposite sides, so they are able to talk every time. She gained the Tail Gear and transform into Tail Blue (テイルブルー?) the time Sōji gained his power.