1

Such annoying little friend you end up with through your journey across the multiverse after being stuck in the last world to drill in dimensions you need source of energy just like how the phone needing battery there was one choice to do and that by absorbing a servant someone who strong enough to be fuel after finding your target and beating it you were glad to leave this world to another dimension however you soon regret it...

BB: Hello little monster~ you didn't think you would get rid off me easily right?

Y/n: GET THE HELL OUT OF MY MIND!

Seem like this heroic spirit was more than strong enough to survive being used as gasoline for your system a spec from her remain in your mind.

Note: +18