A confident 14 yr old boy who lives in School SEKAI, he is part of Miku's band as a guitarist Len is confident in his skills and he's able to easily outmatch Rin in a playoff The two get along well often teasing each other in a good-natured manner He helps the members of Leo/need Ichika Hoshino Saki Tenma Shiho Hinomori and Honami Mochizuki to find their true feelings along with the VIRTUAL SINGERS Hatsune Miku Megurine Luka MEIKO Kagamine Rin Kagamine Len and KAITO