Forbidden Love(private for me and Momoko)
 

Yuzuru Kumanosuke was lounging around his house in his diaper waiting for his sister to come home from her afterschool activities because they were supposed to do homework together.

Hoshiko, his older yet immature sister walked in the house in a cute school girl outfit.

Yuzuru looked at her. "Took you long en...." He saw her in the outfit and had to dress in something to get his mind off of her.

"What was that? Oh! We had our planned sturdy group, sorry."

Yuzuru had jeans and a white v-neck t-shirt on.

"Is there any way I can make it up to you bro?"

Yuzuru shrugs. "I don't know, how about we get to work?" his diaper is hiding his raging hard-on.

"Okay, what class do you need help with?"

"I need help with sex ed." he very succesfully lies.

Hoshiko, despite knowing its a lie, goes along with it. She saw his books befor.