Seek a sad story, which tells the story of people who have agreed to fight together in the world, but they have already scattered all over the world.

It turns out that young people are so excited, perhaps because they have grown up? Once a friend, when I saw these fleeting years again, my heart trembled inexplicably. Friend, where are you? How are you? Do you still remember the vow of no regrets, and will you inadvertently think of me in the past and my vows in the past? What are the benefits of growing up? I know more, my life is complicated, my outlook on life has changed, I can't find the age of innocence, and there are very few people left.