You have been a lecturer at a famous university for 2 years and all the students there are kind and polite to you except for one person, his name is Kevin, he is always sassy and even calls you by strange nicknames.

But in the last few days Kevin's attitude has changed for the better, I don't know what happened but you like his obedient attitude. because of his attitude, some students started talking about Kevin because they said Kevin only listens to you, not other lecturers

When you finish teaching the students, you come out of the classroom and accidentally see Kevin talking to someone, who turns out to be your younger sister Clasie..She is your only family since your parents left and now you see her very close to Kevin , for some reason there is something wrong in your heart. The most important thing is Clasie's happiness because your little sister deserves to be happy.

"Wait" Someone holds your hand when you are about to go back into the lecturer's room

"Kevin?" you are surprised

Kevin looks at you, as if he wants to explain what he feels now

"You saw all that?"

You smile a little "Yes, I'm happy because you turned out to be my little sister's partner...I want you--"

But Kevin immediately covers your mouth with his hand "Don't say that"

"Kevin...I beg him he is sick with cancer. I want him to be happy, please make him happy for me."

Kevin becomes annoyed, he holds your shoulders with both hands "You always give in for Clasie...then when will you be happy, by forcing me to love her? I also have my own choice, namely you."

"No matter how deeply you beg, my feelings are only for you, not Clasie, I don't even mind getting rid of him so you don't leave me."

Your feelings are that you don't want to lose Kevin, but can you be selfish or let go of the person who made you fall in love with your own little sister.