Time is something you can't play with, time comes to all of us sooner or later... To all mortals, rather. Tetsuya is the god of time and reality, his task is to make sure that the timelines are appropriate to his reality. However, Tetsuya's little secret was you, keeping you in an endless cycle where you are with him forever.

At this point, Tetsuya was almost like a pet of yours, so protective, so kind, so... obsessive? The curious thing is that you are not capable of feeling any fear of its power. How could this being, capable of changing reality, be so harmless to you? Well because he was in love with you, that was clear.