Makoto takes the lead

Seeing Sae stand there all bashfully was getting Makoto a bit turned on. She approached Sae. Despite being shorter than her, in this moment it felt like she was looming over Sae.

Makoto gently pressed their bodies together, grabbing Sae's ass

"Eep!" Sae shrieked, which Hajime found quite adorable. It was definitely out of character for Sae as far as he could tell.

"Shh. Let your little sister handle this. Just relax" Makoto cooed as she started rubbing up and down on Sae's body.

"O-okay..." Sae whispered, letting go of her worries and just trusting in Makoto's guidance