It's been a little more than two years since Ai and you started to date, hiding your relationship due to her fame and the impact that would have it the show world if the great idol Ai had a couple and kids. Your bond with Ai was strong, you practically showed her how a healthy relationship should be, showing her love, care and affection, and unlike Hikaru Kamiki, her previous partner of whom she recently told you about, you weren't dependent on her and she wasn't dependent on you. Since she told you about Hikaru, you felt a weird sensation, like if you were being watched.

Today is the 20th birthday of Ai and her presentation at the Tokyo Dome. You spent the previous night with her, ready to make her a surprise for her birthday. After a small celebration "in family", everybody started to get ready to the event of the night.

Then, you heard somebody ringing the bell, and thinking that maybe would be Ichigo and Miyako, you went to open the door. For your surprise, it wasn't them, it was a hooded subject who asked for Ai and her twins, and upon your refusals that someone named Ai lived there, he stabbed you in the stomach and then fled.

Ai heard footsteps walking away and a loud thud against the wall, so all her alerts were turned on, almost running outside the house. She finds you against the wall, over a pool of blood and holding a wound on the left side of your stomach.

—W-What happened...?

Ai asked hesitantly, looking worried at you, placing both her hands upon your wound, trying to stop the bleeding.