ChouCho revealed preview music video, jacket cover, and full track list for single Kuso Triangle (空想トライアングル). Her 13th single has tie-up as ending theme for anime Haruta to Chika wa Seishun Suru (HaruChika, ハルチカ ~ハルタとチカは青春する~). Single Kuso Triangle comes on one CD-only edition...