I suspect that it's slightly hypocritical of Hana-chan to call Kuki-nee-san a 'monster with a crazy libido.' Accurate, mind you - just hypocritical.
Hey, Hana was perfectly well-behaved all those years before she caught Kuki perving on guests for the first time early in this comic (and by "first time", I mean "first time in-universe").
Okay, then I'll wear it.Really!?... Eh?Then...There's this swimsuit I like.Mhm, mhm.That's the one.Wah! So cute!It will look so good on you, Hana-chan!But my allowance is not enough...Swimsuitsto buy it...That is a pity...But you do want to see me in it, right...?SwimsuitsSwimsuitsSwimsuitsYeah, I do.END