Keitai Shoujo

Aida Hiro is in his second year of high school.

All of his previous encounters with love went without reciprocation.

, but it's not unheard of for a 17 year-old-boy attending an all boys' school not to have much love experience.

Still, he cannot be happy, being both unable to whole-heartedly pursue the opposite sex and fulfill his romantic curiosity.

However, he is able to experience true romantic love when he encounters the Keitai Girl, Rin.