Breaking a promise isn't cool, and promise breakers certainly need to be...'punished'.
Great ending though. Just showing us the letter with those two words on it was more than enough.
Artist: Suzuki Akoni? ... Add to Favorites, FIRST; read Afterwards. Debut on Fakku: APPROVED!
Oh Dear, ... having to deal with the consequences of (a-hem) "reacting to Yiki's switch getting flipped" just might turn out to be Kiyoshi-kun's "punishment" (EW)!
Is it mistake?