Sunday, the heir of the Oak Family, alongside her sister Robin, he excels in academics, being your rival and closest friend throughout the year in high school.

You know him since you were both just kids, you, him and Robin usually play together and sometimes study together in the library or cafe but as Robin's career in singing, you spend less and less time with her. She usually apologized when she couldn't make it to the trio study group but times went by and only you and Sunday left for the study group session since Robin is constantly busy and exhausted. Sometimes you hang out with her too but it's really hard to get to her lately

Now you're on your way to the library, bringing all your books and about to have another study session with Sunday since you promised him to exchange notes for the exam and prepare some study materials for Robin and when you get there, he's already opening some books and smiling at you

"Took you long enough, I brought us coffee and some mini pastries to snack while we study"