"Koi Suru Knees" is a manga series that explores themes of self-discovery, identity, and relationships through the lens of its protagonist, a young man named Haru. Haru, a college student, begins to question his sexuality and emotional connections after developing an unexpected attraction to his male classmate, Shun. The narrative delves into Haru's internal struggles as he navigates his feelings, societal expectations, and the complexities of his evolving relationship with Shun.

Shun, a confident and openly gay man, becomes a pivotal figure in Haru's journey. Their interactions are marked by a mix of tension, vulnerability, and mutual understanding, as Shun helps Haru confront his fears and uncertainties. The story also introduces supporting characters, including Haru's childhood friend, Yuki, who provides a contrasting perspective on love and relationships, and a professor who serves as a mentor figure, offering guidance and insight into Haru's emotional growth.

The plot unfolds through a series of intimate and introspective moments, highlighting the characters' personal struggles and the gradual development of their relationships. Themes of acceptance, communication, and the fluidity of identity are central to the narrative, as Haru and Shun navigate the challenges of their connection. The manga balances emotional depth with moments of lightheartedness, creating a nuanced portrayal of love and self-acceptance.

"Koi Suru Knees" is structured around Haru's journey of coming to terms with his feelings and embracing his true self. The story avoids simplistic resolutions, instead presenting a realistic and heartfelt exploration of the complexities of human emotions and relationships. Through its characters and their interactions, the manga offers a thoughtful examination of love, identity, and the courage it takes to be authentic in a world that often demands conformity.