A lewd older sister with top-notch tongue skills and a helpless, bound tuna man! An absolute female-dominated world where everything is done as one pleases! 130 minutes of licking and licking throughout! After being discovered to be a willful masochist who doesn't want to try, I was thoroughly pleasured and turned into a submissive nipple boy by my older sisters. A nipple training ground with sensual tongue skills and party-attracting sounds... a merciless hell of pleasure is here!