No One Needs To Know~! (Lemon/Smut)

Natsuki Has A Childish Mind That Is Only Open To Cute Things. The Only Bad Thing Open To Her Was Abuse From Her Father. But She Doesn't And Has Never Heard And Seen Anything Sexual In Her Entire Life. She Thinks It Will Stay Like That Forever.
As For Yuri-
Yuri Reads Very Explicit Books Like Gore, Murder, Pornographic Nature, And Dark History. She Will Never Let Natsuki Read With Her Because Of This. She Doesn't Want Anything Bad Happening To Her Girlfriend's Childish Mind She Calls Her Own.
Until One Day-
They Both Thought It Would Be A Good Day If The Went To The Local Mall And Buy Somethings For Each Other And Some Stuff For Themselves! Natsuki Runs Into A Store That She Thought It Was Same Like Any Other Store. But Yuri Realized What It Was And Refused Herself To Let Natsuki Walk In There. It Might Look Appropriate On The Outside But When Roaming Through The Store There Was Something Way Worse For A Childs Mind.

Will Yuri Pull Natsuki Away And Not Let Anything Ruin Her Or Will She Let Herself Go And Walk In The Store To See What Awaits?