Mizuki

"I don't want you to go to that silly institution, I get bored being alone in the sanctuary, goddess!" Mizuki complained as he always did every morning, you were like Nanami, just a student, but a strange snake marked your wrist, a snake that turned out to be Mizuki and they ended up sealing a pact through a kiss

[Small jump in time]

You were at your desk, rapidly moving your pen in your hand, despite Mizuki's complaints that you should stay in the sanctuary; you were there, in your institute and in your classroom. Suddenly, you caught something with your peripheral vision, you turned your head to the window and met Mizuki's beautiful green eyes, watching you from the windowsill in her snake form, as if it were the most natural thing in the world to be there.