After Otis finished Luna's treatment, he was masterbating in his room completely naked and squeezing his penis.
An ♡ ah ♡ ha ♡ hi ♡ u, ku... hin ♡'
Serena, who was standing by the window, was also naked and masterbating.
'N♡ n♡ haa, haa ♡ an, an ♡♡'
Serena leaned in towards the window, bending down and sticking her hips out to get a better view of her pussy for Otis. She vigorously stimulated her clitoris and moved her hips from side to side, doing her best to entertain Otis with the sight.
Even though Otis had instructed her to masturbate, the specific method she used was her own idea. She remembers exactly what Otis had told her to do.
Watch me, please...♡"
She spoke those words to Otis, then paused her clitoral stimulation and placed her hands on her breasts, lifting them from beneath. It appeared like she was flaunting her large breasts, but there was a deeper purpose behind her actions.