That ending was dumb. It was a smooth and cozy ride so far, and them BAM, a rocky landing by the end.
But at least it did not crash into the ground and set on fire like some other manga or end in an ambiguos way so i guess that's a plus.
So that's her sob story? Wow, very justified that she treat her sis like shit eh?
What the hell is author cooking this time? Another NTR story or something?
Also, i hate how convienient it is for her sis to just fucking GUESS HER PASSWORD. Lmaooooo