SHIC-236 — The Twin Sisters Of The Shiraishi Family, The Older Sister Ran-Chan ~ The Older Brother Is Seduced By His Younger Sister In A Secret Room Filled With The Sweet Scent, And They Spend A Dreamlike, Lewd Time Together... ~ Shiraishi Ran

This is the story of Ran, the older of the twin sisters of the Shiraishi family! Ran has a proactive and proactive personality. She asks her beloved brother to teach her how to study so that she can do naughty things with him. Her brother falls right into the trap, and even though he knows it's wrong, he becomes obsessed with Ran...and this is discovered by his younger sister Non, and the story continues in the sequel "Shiraishi Twin Sisters: Younger Sister Non-chan"...