Longing for Entertainment Sign-In System

"Ding dong, you signed in successfully. Congratulations on getting the permanent guest qualification for the third season of Longing for Life." A musical genius with a check-in system, living the life he longs for. PS: This book is purely for the author's own entertainment. If you like it, please support it. Thank you. PS: If nothing else, it should be a single female protagonist. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.