When I Travel Through Time, I Can Become Stronger by Listening to Songs for Characters

What magical things will happen to a dead otaku and the protagonist in his book? This is the first novel written by myself. Please help me, please. If you like it, please click and subscribe. If you have free time, you can update four times a day or ten updates a day. For newbies, please recommend. The update rule for the first week is 1 flower per update, up to 20 updates. It's not that I'm lazy, I really can't write that much. I still have to work. Please understand. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.