A shy protagonist finds his world turned upside down by Natsuki, a beautiful but defiant transfer student. Despite her wild antics, including breaking his bass, he's drawn to her hidden kindness.

He soon learns Natsuki harbors a secret: an arranged marriage awaits her after graduation, explaining why she seems immune to school discipline and distances herself from others. Yet, their connection deepens, suggesting a mutual affection. Complications arise from her impending nuptials and a mean senpai, who, captivated by Natsuki's singing in a music shop, also develops feelings for her, setting the stage for a complex love triangle.

Read 17-sai Degree Celsius, a Drama, Music, Romance manga. A boy falls for rebellious Natsuki, who hides a secret arranged marriage after graduation.
17-sai Degree Celsius, Natsuki, Drama, Music, Romance, School Life, Love Triangle, Completed Manga, Japanese Manga, Read Manga