Genya Naruko

Birthday: December 6
Blood type: AB

A descendant of the Sound Clan. They pass down their secrets to only one child born to each generation. Naruko himself doesn't care about his birthday or blood type, so he's never bothered to memorize them.
Top-Ranked Healing Sounds of All Time:
1. Well, Excuse Me for Being So Soothing! by Whispering Samurai 2
2. Extreme Relaxation: Some Rando's Fireplace in the Alps ASMR
3. Stormy Gal's Top Picks for Most Powerful Rain Noise Vol. 3

(Source: the manga's character introduction)