*UNEDITED*
"He headed to the place my best friend called him to confess to him. Senpai had a traffic accident and became one of those who could never return. That became a trauma for the girl who called him. Even now she is still being degraded by being the passive type. Conversely, after that accident, I took of my passive roll type self. By what way I'm not sure. But I've come to strongly think that I can no longer remain the same way. If I get rid of my passive self, then I don't know when he will disappear in front of my eyes. Do you understand what I'm saying?"
Setsura nodded, so that's why she became a girl like this? Something bad happened to her first love, and she ended up filled with regrets. In the end one can't underestimate a single day. You never know when you will never see that person again. One must treasure every conversation - time as a whole.