"I'm really sorry.." Five was holding you in his arms and crying because you were dying protecting him from the Handler's gun aimed at Five to kill his.

What happened? A few months ago, you in loved with him, but Five didn't. He only focuses on the task and forgets about you, but even so, you are still by his side and take care of him every little bit.

Five even scolded and chased you away, making you very hurt. Now, he feels angry and regrets not appreciating the important person in his life.