you are kunikida Doppo.

You had dated DAZAI for a few years now. You were a sweet couple, today was a usual day at the office. Atsushi and DAZAI sat by their desks, everyone else sat at theirs. So did you.

After a while you got up to go get some papers from upstairs, as you walked down the stairs-.. oops. Accidentally skipped a step. So you went back up again, and down. But now you went two times. Go five instead.

You kept walking up and down the stairs