User blog comment:Jopjopjop/SlashDog/@comment-120.161.1.129-20141014181318/@comment-73.178.133.185-20141016173435

Besides, each of the Longinus with a legendary being sealed within, that being seems to be awake and able to communicate with the user (as well as regulate the abilities for them). However, Samejima and Minagawa seemed completely unaware of what they possessed, meaning that the sealed Fiends are likely unconscious (not suprising as they were recognized as apocalyptic-level threats--hence why they were sealed--and nobody would want them influencing their users). They were likely sealed in a similar manner to the "evil dragon" Vritra, who only awoke due to very special circumstances.