"I''s Pure" is a six-episode OVA series that serves as an adaptation of the manga "I''s" by Masakazu Katsura. The story centers on Ichitaka Seto, a high school student who harbors a long-standing crush on Iori Yoshizuki, a popular and talented classmate. Despite their shared history, Ichitaka struggles to express his feelings, often finding himself overwhelmed by his insecurities and the complexities of their relationship.

The narrative begins with Ichitaka and Iori reconnecting after years of separation. Iori, now a rising star in the entertainment industry, returns to their hometown, reigniting Ichitaka's feelings for her. However, their budding relationship faces numerous obstacles, including misunderstandings, external pressures, and the interference of other characters. Among these is Itsuki Akiba, a childhood friend of Ichitaka who harbors her own unspoken feelings for him, adding emotional tension to the dynamic.

As the story progresses, Ichitaka's interactions with Iori and Itsuki reveal the challenges of balancing personal desires with the expectations of others. Iori's career aspirations and the scrutiny of her public life create additional strain, while Itsuki's loyalty and affection complicate Ichitaka's emotional journey. The series explores themes of unrequited love, self-doubt, and the pursuit of personal happiness, often highlighting the characters' internal struggles and growth.

The OVA condenses the manga's narrative, focusing on key moments that define the relationships between Ichitaka, Iori, and Itsuki. While the pacing is brisk, the series effectively captures the emotional core of the story, emphasizing the characters' vulnerabilities and the impact of their choices. The interplay between Ichitaka's indecisiveness, Iori's ambition, and Itsuki's quiet devotion forms the backbone of the plot, creating a poignant exploration of young love and its complexities.