User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-98.26.119.147-20140114220805/@comment-16281343-20140115013312

Issei put him in that position? In what way?

Ok. Lets summarize what Diodora did. She secretly allied with the terrorists and kidnapped Asia. Kidnapping Asia is essential for the plan to kill all VIPs that are their to watch their Rating Game. Asia's companions tried to rescue her and he received his just desserts, not in the hands of Issei but in the hands of those who betrayed him.

If the Astaroth in your mind thinks that "No, the Gremory team is still to be blamed on what happened to Diodora", then I have nothing more to say.