6 November

Today I overheard O-Tama asking Shinobu to train her to become a kunoichi, which Shinobu happily accepted. I asked them if I could come and watch the training because I think ninjas are cool and would love to see them do ninja tricks, and both Shinobu and O-Tama allowed me to come with them.

Shinobu led us to the edge of a forest nearby and set up training objects for O-Tama to use. I thought it'd be fun to try the training myself and do it with O-Tama. We practiced our kunai throwing and some basic jutsus. O-Tama got the hang of them so quick, she's a natural! I just know she'll make a great kunoichi when she's older! After a while I quit the training and sat down to watch O-Tama as she did what Shinobu instructed of her.

I couldn't help but take glances at Shinobu. After recovering from the attack of the plant guy, she became skinny again, just like in her youth that I saw all those years ago! However, I could also tell she's getting bigger again, and will probably be back to her old size again soon. As of now though, she still had her athletic and toned body, but the weight gain has just made her plump in all the right areas, such as her thighs and buttocks especially, which just made her look even more erotic. Which is why I couldn't take my eyes off of her, especially when she's in her kunoichi outfit like she was in at that time, since it was short and showed off all of her legs and barely covered her butt. When she would do certain maneuvers for O-Tama to copy, I would get an eyeful of what she was wearing underneath: a classic white fundoshi! the back was twisted like usual, and dug deep into her toned bubble butt, it was like she practically had nothing back there! The front was also not faring much better, it was a small triangle of cloth that looked like it was getting eaten up by her vagina which I could see the lips of which sticking out from the sides. O-Tama must have noticed this as well, because I saw her blushing everytime it happened. I couldn't get the image out of my head, her thighs and butt and vagina kept invading my mind! I could feel myself getting hard and excused myself to seclusion so they didn't find out about my predicament. When I got to a private part of the forest I tried to push the images of Shinobu out of my mind, but I couldn't do it and my penis kept getting harder until it got its max size.

"Having some troubles?" A voice called out from behind me. I turned around and it was Shinobu! She had a smug and confident grin on her face.

"W-What are y- aren't you supposed to be training O-Tama?"

"It's fine, I told her what to do now she's just practicing. I know why you left, would you like more?" she asked me in a seductive tone.

"W-What do you mean?"

"Oh don't try to play naive, I see that gargantuan cock you're failing to hide!"

"I-I can't! You know about the challenge!"

"All the better to do it!" she leapt at me and latched into me which caught me by surprise and made me fall back onto the ground with her on top of me. Before I could even react she managed to get my breasts and penis out and began to fondle my breasts and suck on my left one while crossing her legs and squeezing them together around my penis and moving them up and down.

"W-Wait!" I cried out. "I don't wanna cum! I'll lose the challenge!"

"Thash why I gotta," she said through sucking on my breast. "Wouldnsh be a challenge then, would it?"

I could feel my breasts leaking milk and my pebis was sure to follow. I tried squirming around to get free but my body was too weakened from all the pleasure it was overcome with, so I just laid there helpless trying not to cum. Her hands were so adept at playing with my breasts and nipples, and her thighs so soft I was getting lost in them! My mind wanted to lose itself in the pleasure and it took all of my power to keep myself grounded and keep fighting back the urge to cum. After a few minutes, Shinobu changed positions so she was sitting on my crotch with her butt pointing towards me, my penis being enveloped by her big butt.

"Art of Bewitchment!" I heard her say. "Forbidden Buttjob Technique!"

She then started rubbing her butt on my penis, moving it to and fro and up and down. She could even control each butt cheek individually! She'd do some hypnotic shaking of her butt that would make clapping sounds as the cheeks rammed into each other. I could see her butthole peeking past her fundoshi, winking at me rhythmically with the rest of her butt. It was all too much to handle on top of the stimulation so I looked away and closed my eyes, but the image was stuck in my head and I could still hear the clapping and feel the stroking so I'm not sure it helped much. After another 4 minutes she suddenly stopped and sat there for a minute to let me cool down before resuming the buttjob. I thought the break would help me out but once she resumed again the urge to cum was even worse than before. She continued this trend of stopping every 4 minutes and continuing for a few times, and each time I felt myself needing to cum more each time. My hands were clinging to tgw ground as hard as they could and my back was arched backwards in a very drastic fashion as I tried my best not to cum. When I almost let go at the 30 minute mark Shinobu suddenly stopped, a mix of both relief that it stopped and worry that I might not be able to handle the next time overcame me until she got off of me.

"All done!" She said. "Congrats on lasting!" She seemed to have a slight sadness to her, as if disappointed she couldn't bring me to orgasm. I laid on the ground and rested until I was ready to get up, thinking I noticed something purple from O-Tama's direction, but didn't see anything when I checked. Once I recovered we went back to O-Tama and watched her training. When we got back, she was sitting down.

"Hey Tama, why aren't you training?" Shinobu asked.

"I-I finished!" She replied back. Her face was red and her movement seemed awkward and she was avoiding eye contact by looking away from us. Shinobu continued the training for the rest of the day and I watched and cheered O-Tama on.

Anyway, that's all for today! Tomorrow will mark a full week since I've started this challenge! Then only 3 more weeks to go!