The sixth duo of the Duet Project are Masato of ST☆RISH and Kira of HE★VENS. Masato is suddenly called back to the Hijirikawa family after his father collapses, which puts a strain on his Duet Project with Kira. Upon returning home, Masato is pressurised into taking over the family business prompting Ren and Kira to confront him about his true ambitions.