[JoJo Crossover] Let Me Borrow Your Stand Power!

I used to think... debts were just about money and benefits. But then I awakened this strange stand-in. It's a golden Holy Grail, but its functions are different from the Holy Grail in the Fate world. It likes borrowing debts, and it can only borrow from people I know. So I've ended up in all kinds of stomach-churning situations.

"Joseph-san, please lend me your power of spirit photography!"

Joseph: That's not spirit photography at all!

"Sougo-san, please lend me the power of Ohma!"

The Little Demon King: Sure, sure!

The Old Demon King: No. Try a little harder yourself.

Me, unable to borrow any power in the end: ...

"Zero-san, please lend me the power of light!"

Zero comes flying in amid sparks and lightning, and directly possesses me.

Me, forced to become one with him: ???

Sorry to bother you!

"Fujimaru-san, please lend me..."

Before I can finish my debt-borrowing line, my vision blurs, and I find myself standing in a summoning circle.

As a Caster, I look at Fujimaru Ritsuka in front of me.

My liver hurts.

CP: 20,000 years.

Notes:

1. First-person POV warning.

2. The protagonist transmigrates!

3. I might vanish without a word (?) Let me save up chapters first, let me save up chapters... I'm writing it! (Meaning the opening in my notes x)

Theme: Bonds can become a source of strength!