"Sentimental" is a manga series that explores themes of love, loss, and personal growth through the intertwined lives of its characters. The narrative centers on Kana, a high school student grappling with the complexities of adolescence and the lingering pain of her parents' divorce. Her life takes a significant turn when she meets Yuki, a reserved and enigmatic classmate who harbors his own emotional scars. Yuki's quiet demeanor and artistic talent draw Kana in, and the two form a tentative bond as they navigate their shared struggles.

The story delves into their evolving relationship, which is marked by moments of tenderness and misunderstanding. Kana's outgoing nature contrasts with Yuki's introspective personality, creating a dynamic that oscillates between connection and conflict. As their friendship deepens, Kana learns about Yuki's troubled past, including his strained relationship with his family and his unresolved feelings for a childhood friend. These revelations force both characters to confront their insecurities and fears, pushing them toward emotional growth.

Secondary characters, such as Kana's supportive best friend and Yuki's estranged brother, add depth to the narrative by providing additional perspectives on the central themes. The manga also explores the impact of societal expectations and familial pressures on the characters' decisions and relationships. Through its portrayal of everyday struggles and heartfelt moments, "Sentimental" captures the bittersweet nature of adolescence and the process of healing from emotional wounds.

The plot unfolds at a measured pace, allowing for detailed character development and exploration of their inner worlds. The series balances moments of introspection with lighter, slice-of-life scenes, creating a narrative that feels both grounded and poignant. By focusing on the emotional journeys of its characters, "Sentimental" offers a nuanced portrayal of love and self-discovery.