He loves his senpai but she doesn't seem to notice him! She loves her kouhai but she has too much of a poker face to show it! Will Len's senpai finally notice him? Will Len finally notice her? It's all in the story!

This is a Len x Reader story. You were an ordinary anime fan when you found out an announcement about vocaloids and humans. What will happen when they chose you to be the project tester.