Tsunade sat waiting expectantly for Ryoku to comply; behind her desk, which her hand was obscured by, she seemed to be rubbing something, and Ryoku instinctively knew what it was.
'She's enjoying this…?!' Ryoku pondered, surprised by Tsunade's lustful nature. He always had an instinct that she wasn't as straightlaced as one may expect a Hokage to be, but he just thought that came with the gambling and drinking addiction and nothing more. He never imagined it would be a perverted desire like this.
Careful not to keep Tsunade waiting, Ryoku hurried over, now standing right next to her. She tapped her thigh again and said, "Bend over; I don't have all the time in the world."
Turning red in embarrassment, Ryoku instinctively covered his face and slowly began leaning over Tsunade's thighs. As he was in the process, he made direct eye contact with her bulge. The shape of her dick was accentuated by her tight navy blue pants, to the point it was looking as if it was about to rip through the fabric of her pants.
Despite the intimidating size of the bulge, Ryoku couldn't help but feel himself grow aroused by it. "S-so... Big…" he muttered to himself. At this point he had been staring at her bulge for a good 5 seconds, causing Tsunade to take notice.
"Like what you see, do you? I didn't take you for a perv, Ryoku, but now I know this. We'll be having a good time together."
Ryoku Hearing Tsunade's words made his face grow more red. Without responding, he bent himself over her lap, ready for the spanking.
Tsunade placed her hand on his back and slowly ran it down, all the way down to his behind. Stroking his behind a few times, Tsunade cooed, "Spanking requires the bare ass to be exposed."
Although not having done much, Tsunade's delicate touch and soft, seductive words were having an effect on Ryoku. Unconsciously, Ryoku's downstairs member began to stiffen, the blood rushing to it increasing.
Tsunade, taking note of the sudden stiffening of Ryoku's penis, smirked, blushing slightly, as she got more aroused.
Digging her fingers down Ryoku's black cargos, she slowly pulled them down, exposing his pale behind. Gripping one of his cheeks firmly, causing Ryoku to jump, Tsunade spoke, while biting her bottom lip, overcome by lust. "It's so soft and ample; this ass of yours will need some precious treatment sometime soon."
As the words left her lips, Tsunade's dick began to grow, the bulge increasing in size, with her pants now barely able to hold it. This increase in her dick size alarmed Ryoku. Having a 6-inch penis, Ryoku couldn't imagine that a cock of Tsunade's size could possibly exist.
'M-massive! 11 inches... No, 12… 13 perhaps… Tsuande's cock continued to grow in size, while Ryoku threw out some more estimates, unable to place his finger on how big it truly was.
As Tsunade grew more aroused, she gripped Ryoku's supple cheeks even harder, her fingernails digging into them slightly, leaving marks. 'I've been so pent up and busy doing this job, I didn't realise how much I needed to fuck something!' Tsunade thought, her eyes filled with desire.
Taking a deep breath to compose herself, Tsunade raised a hand and with extreme force brought it down, slapping Ryoku's right cheek hard enough to leave a red mark.
As Ryoku was about to yell in pain, he quickly covered his mouth, not wanting to alert anyone else in the building, stifling the yell.
His eyes watered from the pain, but he composed himself, waiting for the next. Again with a thunderous clap, Tsunade brought down her hand on Ryoku's ass.
This continued 3 more times before Tsunade decided she didn't want to just spank him. No. She wanted more.
As she stroked Ryoku's red butt cheeks, Tsunade looked over at Ryoku and asked, "Have you ever been… fucked?"
Tsunade's finger slipped between Ryoku's cheeks, finding her way to his anus. The slight touch of Tsunade's hand sent a shiver down Ryoku's spine.
A new mission screen appeared as Ryoku thought about being ploughed by Tsunade's massive cock.
[Mission Complete!] [Reward: 20 XP. Congratulations, you have ranked up to the lower Chunin level!]
Seeing the notification, Ryoku felt a wave of dopamine fall over him. '20XP – took me from a mere Genin to a low-tier Chunin?!' he mused, forgetting all about Tsunade, who was eyeing his ass to take for herself.
As Ryoku was rejoicing, a new notification appeared. [New Mission! Let Tsunade fuck you! Reward: 70 XP!]
Ryoku looked at the notification, remembering what predicament he was in. There was a lustful Tsunade wanting to destroy his anus.
Despite being intimidated by the size of Tsunade's penis, he couldn't help but feel the desire of curiosity and lust bubbling up within him. His penis was practically ready to fly away from how erect he was from a few spankings.
Looking at the mission screen, he pondered, 'And I get 70 XP for it too? At this rate I'll be able to get powerful in no time!'
As Ryoku was about to respond to Tsunade, a knock on the door caused him to almost have a heart attack. Quickly getting onto his feet and pulling up his pants, Ryoku walked over to the door, opening it to see who it was. In the meantime, Tsunade fixed herself up, as to not draw any suspicion.
Opening the door, Ryoku noticed it was Sakura who was standing just outside.
"Is Lady Tsunade here? I've come for some training." Sakura said, tilting her head slightly to get a better view of the office desk behind Ryoku, who was standing before her.
Sakura had been learning how to heal and different fighting styles from Lady Tsunade; everything was normal, but he couldn't help but notice that Sakura was a lot more muscular than he had remembered and her chest, as well as her behind, were a lot bigger.
'She must be working out quite a bit. She's put on some size.' Ryoku thought as he stepped aside.