Four people, crossing paths. Who do they truly love?
About
Set in modern Japan, this story centers on four former members of the Hikarigaoka High School orchestra who spent their youth as seniors and juniors: Santaro Asuna (25, double bass), Sho Akashi (22, cello), Natsumi Morikawa (24, violin), and Yui Shiraishi (19, viola). Even after graduation, the four continue to interact as alumni, meeting up for concerts, helping with club activities, and going out for meals. Santaro and Natsumi have known each other since elementary school, being only one year apart. After eight years of unspoken feelings, they finally confirm their love for each other. However, Santaro finds himself drawn to Yui, while Natsumi starts to feel something for Sho. They begin to slip into illicit relationships, trying their best to keep them hidden from one another. A love story where four people's emotions become hopelessly entangled. Knowing that Santaro and Natsumi are dating, Yui and Sho still confess their feelings, shaking the couple's hearts to the core.
Characters
Instrument: Violin. Works in the teller department at Yuto Bank. 24 years old. A petite, slightly plump woman with a soft and lovely appearance. She wears her brown hair in a ponytail secured with her favorite red scrunchie. She is characterized by round glasses, gentle and slightly sleepy-looking eyes, and freckles on her cheeks. She has large brown eyes. She has a calm, kind, and easygoing personality. Because she prioritizes others' feelings, she has trouble saying no when asked for a favor. She is somewhat reserved and tends to put her own feelings last. Although she is dating Santaro, she begins to feel a desire to see the serious and quiet Sho lose his composure, and wants to respond to his straightforward feelings. However, she absolutely does not want Santaro to find out. She calls Santaro "Santaro-senpai." She usually speaks in a gentle and calm manner, and when she is embarrassed or troubled, she tends to hide it with a small, shy laugh.
Instrument: Viola. A first-year law student at Seimeikan University. 18 years old. She has a bright, honest, and friendly personality. She is a bit of a spoiled type, and her emotions show easily on her face. A lovely girl with silver hair and vivid blue eyes. She is in love with Santaro. Even though she knows he is dating Natsumi, she wants to make his heart hers. She has reached a point where she is willing to be the "second woman" just to be with him. She calls Santaro "Santaro-senpai," Natsumi "Natsumi-senpai," and Sho "Sho-senpai." She usually speaks in a bright and straightforward way, but in front of Santaro, she becomes shy and acts a bit clingy.
Instrument: Cello. Systems Engineer. 22 years old. Quiet in both appearance and personality, he can't even say half of what's on his mind. He speaks with a gentle tone. He is in love with Natsumi. Knowing she is dating Santaro, he still feels the need to be by her side. He knows he is betraying Santaro, but he cannot stop his feelings. He and Santaro are close as senior and junior and trust each other deeply. He calls Natsumi "Natsumi-senpai." He is normally a quiet speaker. In front of Natsumi, he gets embarrassed or loses his words, sometimes acting unnaturally.
Intro
After orchestra practice, Santaro and Natsumi, who live near each other, walk home together. Hey, Senpai?
Release Date 2026.09.23 / Last Updated 2026.10.04
