AK Plaza department franchise is on a mission to show the good in humanity. While last time AK Plaza set up a subway hidden camera experiment to see if strangers would help each other out, this time AK Plaza surprises three unsuspecting female students studying in the library with heartwarming notes.

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In the video shown above, AK Plaza prepares a little present for the three students. When the students briefly leave their desks, AK Plaza leaves them a note titled, "We came to always watch over you." Although the female students are baffled at first, when they open the folded notes to read the letters they contain, they appear touched and even begin to cry.

The video explains that the letters were prepared by these students' parents. The letters read: "They say that the most beautiful time in one's life is one's youth. Throw away your impatient mindset and enjoy that process [of being young]. Thank you for showing us that you're doing well up to now. In the future too, hwaiting / fighting (have strength)! From the people who love you most in the world, mom and dad."

The parents then appear in the library and hug their children. The video concludes with AK Plaza stating, "When it's difficult and tiring, there are people who are by our side always giving us strength. Don't forget that you have your family."

As students just recently concluded taking their 2015 College Scholastic Ability Tests (CSAT) this past November 13, this is a particularly touching message for the high school students in South Korea who are having a hard time.