Yumi Nagumo

Yumi Nagumo is a college girl who is noted to have model like looks and very large breasts. Ogino meets her at a motorcycle driving classes and immediately falls for her. Despite her appearance and popularity, she is a kind hearted girl whom falls for Ogino despite his not particularly good looks and ackwardness. Yumi is kind hearted to the point of naivety which makes her get involved in convoluted sexual situations with other men along the series.