Saimin Kakarazu

A story about an older sister pretending to fall under hypnosis.
An older sister spent big on a hypnosis app.
Because of that, her younger brother makes fun of her.
She gets mad and pretends to fall under hypnosis...
Her brother actually believed it and began to order her to do lewd things.
And so his lewd orders gradually started escalating...
(Source: FANZA, translated)
Released at Comiket 96.