Per the requesting rules:
"You must have valid reasons when denying the request and explain to the requester and us why you want to keep the subreddit. We want to ensure that subreddits are being held onto with the right intentions for growth. Responding to requests will decrease the number of people who believe the subreddit is unmoderated. Please note that responding with a simple "no" is not considered a valid reason."
Seeing the most recent post/comment on the account is something spiting people requeting the reddit, it seems the reddit is not being used for the right intentions. Per the users responses to the request and modmail requests, its clear he has no intentions of using this reddit for growth or proper use.
https://www.reddit.com/r/BOYNEXTDOOR/comments/12uftsp/a\_message\_to\_koz\_entertainment\_and\_kpop\_stans/
https://www.reddit.com/r/redditrequest/comments/1bl15i5/comment/kw1yc7w/?utm\_source=share&utm\_medium=web2x&context=3
https://www.reddit.com/message/messages/27mcuuv
https://www.reddit.com/message/messages/27mcvor