Alison: What do you want Anton!?
Anton: Have you seen Shu?
Alison: Yeah...but he's not breaking up with Y/N! WHAT SHOULD I DO!
Anton: I'M NOT INTERESTED!, do something, you offered yourself for this job...
Alison: If I'm your sister, you don't have to be like that! I HATE YOU BROTHER!

~Flashback~
Alison and Anton are twins and they were 6 years old here
Their parents were always busy with work and didn't pay attention to them...so they had to fend for themselves
Little Alison: Mom?
Mom: What do you want?
Little Alison: Do you want to play with me?
Mom: NO!
Anton: Dad, do you want to play with us?
Dad: I have work to do!
And that's what they've been listening to all their lives...
~End of flashback~

Shu and you were at your place preparing dinner
You: I wonder what Anton is doing now...
Shu: What's his last name?
You: (L/L come up with a last name)
Shu widened his eyes: That's Alison's last name too!...
You: Do you think they are brother and sister?!
Shu: That's why Anton was famous when I met him...
You: We have to be careful what we do from now on...
Shu: You're right
In the morning, Shu woke up first and went to the shop
And you got up a little after him
And you looked for him everywhere in the whole house, but he wasn't there
You called him
You: Shu, where are you?
Shu: I'm coming back from the shop
You: Good, I'm going towards you
You saw Shu, but...
Alison kissed him
You: Shu?...
Tears welled up in your eyes
Shu: Y/N stop! She kissed me!
You: I want to be alone...and you went home and cried
But you knew what Alison wanted, so you forgave Shu