Literary version: Maybe everyone has loved someone unreservedly in the ignorant and passionate years. After consuming too much, they realize that this life may never be as devoted as that time again. It may be because they have been injured, maybe those years have passed, and the people in those years have grown into something else.
Brief version: It's a story about the male protagonist who doesn't know how to cherish, is an idiot, and then looks back.
Snake Edition: It's a story about a group of people running amok. . (Is it really okay for me to work so hard to ruin the introduction?!)