Kamisu Reina Series

Summary

She is my best friend-a member of the track-and-field club and in a different class, but we always go home together. She is my hateful nemesis-the murderer of my family. I won't forgive her and I will take revenge! She is my fellow partner-together, we fight against the humanoid energies to save the world. She is my... She is always smiling with an absurdly beautiful smile. What is she to you...? (Source: Baka-Tsuki)