Just an outside performance for money got you into Japan's greatest singing group, Vocaloid. After joining the group, Miku and the rest greet you with open arms. You quickly bond with Kaito and Rin, those two becoming your best friends. However, one person in the group stays distant from you while the rest become your friends. He is Rin's brother, Len. You notice this and let it distract you from practices and concerts. Rin confronts you about your situation, demanding an answer. You then explain what's been bothering you. Rin understands and tries to do something about it, but no luck. "Talk to her." She tells her brother. He refuses. Instead of confronting him for an answer, you just sit and wait. But a few days after you tell Rin he's ignoring you, Len does some unexpected things. "I've wanted to do that for so long~" he sang, breaking the kiss.