Forgotten Title Looking for this BL novel help

I’ve only seen the summary, I saw it when I was doing [Random Novel] months ago but what I remember is that its like a system novel, the MC gets ‘food’ from protecting the ML? The MC isn’t human from what I remember and in the summary I think they mentioned about him blocking a bullet for the ML and he doesn’t die, the ‘food’ they described from what I remember is something that earth doesn’t have so he has to rely on the system?? I don’t remember it clearly

 

I think you might be looking for "I Became a Fanboy of the Villain".

 

Yes! Thank you so muchhhh

 

You're welcome, glad I was right.