Nishiyama Hiyori (140cm, 4'7 ft at the start of the manga) has just entered high school after recovering from an accident the day before her entrance ceremony.But, being as shy as she is, can barely introduce herself to the class. Once she finally works up to courage to do so, she is interrupted by Hirose Yuushin (190cm, 6'2 ft). It all goes downhill from there.Hiyokoi is a shoujo manga by Yukimaru Moe that started in 2009. An OVA by Production I.G was produced in July 2010 as a twenty-two minute long film.
- Beta Couple: Ristuka and Kou.
- The Big Damn Kiss: Ristuka and Kou.
- Cannot Spit It Out: Hiyori is too shy to confess her feelings towards Yuushin.
- Chick Magnet: Yuushin
- Clingy Jealous Girl: Reina, until she decides to let Hiyori confess to Yuushin.
- Huge Guy, Tiny Girl: Yuushin and Hiyori
- Keet: Yuushin
- Ill Girl: Hiyori. Turns out that she's not ill. She just has really really really bad luck.
- Interrupted Declaration of Love
- Locked in the Bathroom: It happens in the OVA during a sad panty shot incident during class. She (Hiyorin) felt so sad and embarrassed that she ran into the washroom. The poor girl!
- Closed Door Rapport: Subversion: after the above incident, Yuushin walks in to said washroom and tries to console Hiyorin. When he finally manages to console her and talk her in to coming out, she unexpectedly emerges from the opposite stall! Thus, our honest straight-forward lover boy was talking to the wrong stall the entire time !
- Nice Guy: Yuushin
- Opposites Attract: Yuushin and Hiyori
- The Quiet One: Hiyori.
- Shrinking Violet: Hiyori
- Single Woman Seeks Good Man
- Unlucky Childhood Friend: Kisaki towards Yuushin
- Will They or Won't They?: Yuushin and Hiyori. They do.