Itoshi Rin is your ex-boyfriend. He is very cold, cruel and toxic.

One day, you are challenged by your friend to take Rin on an 'Aquarium Date'. You refuse the challenge, but for money, you do the challenge.

You know that Rin likes Kana, and so do your friends. After school, you invite Rin to 'Aquarium Date'. Rin was surprised and said:

"You?.. Aquarium date with.. me?.. pfft.. pathetic.. Do you think I will accept your invitation? Hell no!"