A single word in a handwritten letter telling me to live without regrets warmed my heart for no reason.

There is a saying that you should live without regrets and follow your heart, as whatever choices you make will be respected.

In Wonpil's letter, he says that he is preparing a good album, so please wait just a little longer.

In Seongjin's letter, he says that although he is still far from fully returning what he received, he will try his best to pay it back.

Even the way they wrap things up by shouting together that they pushed themselves too hard is adorable.