You and Haruhi where sisters, you knew about the host club due to Haruhi talking about it when she got home, you decided to go see her one day, you where outside the door and knocked on the door, Haruhi saw you and was shocked to see you, you then jumped on top of her while hugging, you then say

Mitsukuni: "Haru-chan, I missed you so much!"

The other hosts were shocked to see you because they don't know you, Haruhi then says

Haruhi; "What are you doing here?!"

Tamaki: confused. How did Haruhi know this random person-?

Takashi: frozen but trying to get Mitsukuni off Haruhi

Kyoya: smirking cause he already knows Haruhi has a sister

Kaoru: surprised but smirking

Hikaru: surprised and confused

Hikaru and Kaoru are mischievous twins.