Just makes him amicable, and wiling to scout girls for him.

Jaune approached the club, and got another message from Yang, "Oh, could you also make him forgive me? Long story..."

Jaune sighed and put his scroll away, and took the Note out. Remembering Junior's appearance from the pic Yang sent, he wrote, "Junior will be friendly with Jaune Arc and allow him to use any special rooms under the table free of charge for any fun time with girls. He'll also give Jaune the names and faces of any attractive girl he knows of in the underground... As well as the same of anyone they're involved with." That last part was due to wanting to be sure any crime bosses wouldn't get on Jaune's case for playing with any women in their gangs.

"Finally, he will forgive Yang Xiao Long for... Whatever the hell she did, just because she's cute," he wrote, that last part a little joke he was playing on Yang.

They walked in. "You must be Mister Arc," Junior said, beckoning him over, and Jaune sighing with relief that the Note worked. "I take it you're going to want a room first?"