Eru-Eru Sister Manga Summary
The giant Konakai Futaba and the sadistic beyond words, skirt chaser Konakai Ichino are sisters. Futaba suffers from being overgrown and bears with her sister's sadistic teasing. But what if Ichino doesn't really LOVE Futaba the same way as Futaba LOVEs her?
From Baka-Updates:
Konakai Futaba loves her older sister more than anything else in the world. Kind, beautiful and intelligent, Ichina was everything that Futaba wished that she could be... she even encouraged Futaba when she was feeling down.
As such, Futaba went to the same highschool as Ichina, hoping to be reunited after two whole years of being apart...
...but sadly, Ichina has completely changed from the sweet, gentle sister that Futaba remembers.
Into a massive pervert.