YESSS!!

There is a novel?!

Yes there is!
Sorry, I never checked my home topics before so I didn't see your comment until now, but here is the link to the novel if you are still interested !!!ദദ◝ ⩊ ◜.ᐟ

https://www.novelupdates.com/series/ossan-36-ga-idol-ni-naru-hanashi/