KHR : Sawada Tsunayoshi's sister (Hibari Kyoya/Mukuro Rokudo love story)

This is a story about Sawada's sibling. Sawada Tsunayuki was the first daughter of Sawada Iemitsu and Sawada Nana. She was the oldest sister of Sawada Tsunayoshi and Sawada Tsunahime. Tsunayuki was protective of her siblings. Tsunayoshi was a twin brother of Tsunahime by 5 minutes older than Tsunahime. Tsunahime and Tsunayoshi were both weak and soft person while Tsunayuki was strong and tough person.

What will their fate? What will happen when a tutor named Reborn come to their house and claim that three of them were candidates as a future leader of vongola? What will their choice? Will they take challenge for that position as a future leader of vongola?