[Mikami blinks, but the rest of his face continues looking serious. That sounds... ridiculous. If he wouldn't want to believe Light so much, if Light was somebody else, acting differently... he might have just left at this point.
But considering everything that had happened before, this almost made sense again, in a weird way. After all why would someone as smart as Light Yagami tell such a stupid lie? Teru couldn't think of a reason, guiding him to the conclusion that it might be true.]

Considering I haven't seen a proof for shinigami existing up to now, it's fairly obvious that I have no way to gain knownledge of such details.
So you say that a shinigami has helped you to get these powers?