Our protagonist Tatsuya was living a normal life as a video game fanatic and altogether average guy. One day he stumbled upon a dark-skinned beauty being attacked by dogs in an alleyway… One thing leads to another and she ended up living with him as she had nowhere else to go… With nothing of her own, she can only think of one way to thank him for his kindness…

Raika’s brother died suddenly. She changed to her brother’s school (all-boy school), so she could to find why he committed suicide. Someone interferes with her and discovers her identity leading closer to the truth behind her brother’s death.