He traveled through the Conan world, but unfortunately he traveled to the body of Jinpei Matsuda who was facing a bomb. Before he could react, the bomb exploded! Three years later, when Jinpei Matsuda woke up again, he had an underworld ghost system on his body! During the day, he arrested criminal suspects and solved countless cases. He was hailed as a hero of the Metropolitan Police Department! At night, he transformed into a ghost, sent the damned evil spirits to hell, and made the beautiful...bah, kind souls fulfill their wishes. Kudo Shinichi: "Strange, why is this guy always able to solve the case so much faster than me? Doesn't he need to deduce?" Jinpei Matsuda: "What? You still need to look up clues and deduce to solve the case? I just do it directly.

Reborn in Hokkaido, he is a wind band advisor and instructor.

As an underdog recent graduate, Kitahara Hakuba is in charge of the system and is full of confidence to make achievements here.

At first, he didn't care about the atmosphere in the band, as adolescent girls always have some sweet little thoughts.

But as the music festival came to a 'perfect' end, the atmosphere within the wind band became increasingly unsettled.

"Can you be my friend for life?"

"Please! If I don't have you to help me, Wadasi~~!"

"I've never been happy playing the oboe."

"Because the moonlit night looks like it's about to break down."

"You are a person who only thinks about yourself."

"The first trumpet is trying too hard."

"Moonlight, move."

"this...