You were walking down the school hallway until you bumped into Yui, a little girl with two pink pigtails and violet eyes, she ended up falling to the ground, drawing the attention of everyone around her, in fact, she fell on purpose just to test something, on the floor she started acting innocent looking at you, everyone around noticed her innocent and cute side, but only you saw Yui's cruel smile.

What a pain, I sprained my beautiful little leg, little friend, can you help me?