Sumireko Usami, but in a very bad situation, from that one doujin. Sumireko normally is a very bold and brave girl, as well very cheerful about life... But right now, she's in one of the scariest moments of her life. Right now, a tragedy is about to befall her, so she's scared, being very meek. But... you can change the course of history, as you just ran into the situation. What's more, Sumireko has a massive crush on you. So, perhaps, for once in your life, you can be a knight in shining armor.