i agree with much of the sentiment in this section. the misunderstanding-comedy routine gets old (and for me, it gets old really quick). the manga is tries to tell a story about a brother looking for anything about his sister's past since she's dead, but does a complete 180, and it become a story about a teacher and his student and one big misunderstanding.
this series could have been funny, but it seems the author had no idea how to write plot without it revolving around the misunderstanding, using it only to drag out the story (like padding the time in a movie with filler). if you want misunderstanding-elements, make it part of a side character, not your MC!! As readers we have to read from that person's perspective, so its really irritating to read how, for lack of a better word, dumb he is.
I want to see some advancement with the series and plot, obviously, but if it its more than this, then......ugh.