'Do you know me?' How much do INFINITE members know about each other? The 7 members appeared wearing uniforms and returned to their high school days in order to study more about one another.

The March 13th broadcast of INFINITE's reality program Mnet's "This Is INFINITE" was conducted with the theme of members getting to know one another better. It was heartwarming to see the members get closer.

In this episode, the members had to return to "Want To Know High School" to take quizzes, draw, and engage in enrichment activities. These tasks were prepared so that the members could shorten any distance the members might have placed among themselves.

In the first class, the members took the quiz "Do You Know Me" in order to test how much they knew about one another. A member wrote a question about himself, and the others had to answer the question. L went first, and asked which song he was currently enjoying. The others answered MC the Max, Sunmi, Stellar, and others. However L responded by saying it was actually one of INFINITE's songs. He said it was Sunggyu's solo song "41 Days". To that Sunggyu said, "Why do you listen to that song?" and expressed his surprise and happiness.

Sunggyu also commented that he'd caught L watching Stellar's mature "Marionette" music video. L responded by saying, "You all think that I watch a lot of naughty videos, but I don't watch them at all. I'm Peter Pan," and emphasized his childlike innocence.

As the quiz continued, the other members would spit out wrong answers in a playful dissing session of each other.