Chieri no Koi wa 8 Meter - Ch. 40

[durende]

Okay, that was close, Sudoh almost got me liking dudes but Chieri's sister turned me back onto the straight (pun intended) path

 

[Valle_reading_manga]

Yumeji-kun is Chieri-chan's! What's Chieri-chans's is mine!

So she did have ulterior motives after all
That being said, Chieri has the size advantage so it doesn't really matter...