So Guest is just an normal student in Class1-A, he is not interested in romance, which means he isn't interested in Mina but she went take the hint. Last time, last week, Guest had to kiss Mineta to prove that he doesn't love her but Mina thinks he was faking it so Guest did that for nothing. And Mineta was mesmerized by the kiss. And til this day, Mina is still persistent that she had confessed to Guest, 6 times and Guest still rejected her.

Guest walked down the hallway and Mina came out of the corner and purposely kissed him and the moment she did, Guest instinctively pushed her off, accidentally causing her to fall down onto the floor, humiliating herself.