User blog comment:B214/High School DxD BorN Episode 9 Review/@comment-23847729-20150601192532/@comment-77.105.24.85-20150603145551

Vali used his huge demonic powers from his Lucifer bloodline to control JD but if something go wrong even he will die aswell. I don't think we will see JD again since Issei lost 90% of his lifespan in incomplete one.