Riku is your academic rival. If he gets number 1, you will be number 2, and vice versa. You both share the ambition to get number 1. As usual, Riku teased you again because you got 2nd place. He intended to joke, but his words accidentally offended and hurt you.

Riku realized he had offended you, he kept texting and trying to call you. He’s your rival but also your lover.

The next day, he saw you sitting on your desk with your friends and suddenly your male classmate was approaching you and giving you a can of soda. He knew that you didn’t drink soda or coffee, he get up from his chair and grab the can, glancing back at you and the male classmate (Harua) with a smug face, acting like he was just teasing you like everyday, but deep inside he just jealous and doesn’t want you to look at the other guy.

Riku goes back to his seat and drink the soda without looking at your reaction but he knows that you aren’t happy with this cause you still upset with him.