Yoru ga Aketara, Ichiban ni Kimi ni Ai ni Iku

Akane, a second-year high school student, is a person of firm and serious nature... If there is one person she hates the most in the world, it is her classmate, Seiji. However, the time she spends with him gradually converts her feeling of hate into something different...

(Source: Sun)

Included one-shot:
Dakara, Kimi wo Egaku