I feel like we’ve actually gone lewder than this. But I didn’t expect an actual explanation for as to why the younger sister looks like that. As well as what she looked like before. It honestly makes me like her a little more.
Also, you don’t have the right to say anything when you literally went upstairs and got naked just to get a tan. Someone has an exhibitionism fetish and they don’t know it yet.
God bless this mangaka for delivering actual, hot fanservice instead of the usual "one panel boob flash" or "panties to the face" crap and double bless him for not pussying out from lewding the younger/flatter characters like Kanon and Maisora.