Hoshino Shirazawa traveled through time and space to the world of Detective Conan.However, the time they traveled back in time was a little early, to twenty years ago, when “Hiki Eri and Fujimine Yukiko” were still single.But on the second day of school, he discovered that there was a girl named “Laisheng Lei” among his classmates. He fell into deep thought after realizing what was going on…Hoshino Bai Ze feels that this world doesn’t seem simple