Min Yoongi is Yeoju's private tutor
The female protagonist rebels, saying, "I don't want to study!!" and Min Yoongi finds her cute and lovable. Min Yoongi thinks deeply about the female protagonist's failure to do her homework every day and then says,
"If you don't do your homework tomorrow, you'll date me."
The next day
"Watch a horror movie with me tomorrow."
The next day
"Double the studying tomorrow"
And then...
"Tomorrow at 9pm in front of ◇◇."
When I went there at 2pm the next day, Min Yoongi gave me chocolate
That dayValentine's Day