Responses
well actually there are stories where all the time the one they thought were innocent were the ones who were manipulating them and making them think that so the ending was kinda acceptable for me but that's your opinion so ok~
some of the stories I'm talking about are:
http://www.mangago.zone/read-manga/akuma_chan_wa_momoiro
and
some chapters of yajirushi - harada i think
I feel like I'm the only one but the plot twist didn't really do it for me. It seemed like it came out of nowhere and was pretty out-of-character for the older brother. I could buy him having maybe had some confused feelings for his brother but nothing that clean cut and possessive.
I don't know, I really liked it at first but the last chapter really soured it for me.