Seems like a good thing I missed chapter 5 and 6 when they first came or I too would be irritated with Akira. As is I can totally understand she would get selfish, irritated and irrational when the girl she's head over heels for not only loves another girl, but that girl is basically Akira's little sister, who Rin is supposed to be tutoring and have kissed only once. Like anyone wouldn't go WTF at that.
With this latest chapter I think she'll be over thinking mean and condescending stuff about Mayuki. Rather she'll probably be very confused and the three of them will have a difficult time sorting this triangle out because, let's face it, they are all young teenagers.
And can I just say the kisses in this series are amazing!
Just wanted to say same. Reading these three chapters in a row like this, my feelings on Akira went on a roller coaster ride.