Be worthy

Since my live gets a little empty thelast few months, as a real hero I decided to find my last
rest in Avalon.
After a long journey I reached Avalon and it's impressive castle where the holy grail is hiding.
At the gates sat Anfortas - the lord of the
castle - in a wheelchair and bewailed about something.
I gave him 10 Euros as an entrance fee and entered the castle.
I reched the courtyard which looks like peaceful and kitschy like a location in a Final Fantasy game. In the courtyard stood Saber who spent some time here to heal her wounds from her battles.

I went to the middle of the courtyard heading to a chapel, but Saber stopped me and said: "You must not go any further! Behind this door in the chapel is the holy grail, the key to the HimmelREIch."
("Himmelreich" means "kingdom of heaven" in german. As you know, in every good japanese story, there must be at least a german term and the "Rei" included)

If in this chapel is the key to the Rei I just had to go in and I lived long enough to know how stuff works on this world and said to Saber: "I already paid 10 Euros as an entrance fee, so take another 10 Euros and let me in." But Saber answered: No, you need to proof yourself worthy to enter the chapel."
I didn't intend to give up that fast, so I gave
her my wallet, saying: "Shut up and take all my money!"
Than Saber gets real angry, she even draw her sword and answered: "You may buy some plastic girls with that, but certainly not me! Leave and do not come back until you're worthy!"

Deeply disappointed I left the castle. In the back I heard Anfortas shout: "You need to ask the right question, to proof youself worthy for the grail!"
"The right question." I said to myself "what question could that be?"