Ok now first before you start reading the story you need to know a couple things:

1). Shadows do not rape people

2). if you think your going to be raped by your shadow then call the people in white coats.

3). and finally if you really believe the stories that I write, then get professional help

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Kiba sat down in the shade of a tree, overlooking his teammates sparing. Kiba shifted the position of how he was sitting, in order to better hide the boner he was sporting.
Kiba had a HUGE crush on his female teammate, Hinata. To him her body was a model of pure beauty, he wouldn't know personally though cause she always that god damn jacket!

'Kiba!, Kiba!, Hello earth to dog boy!' Kiba was shaken from his dreams as Naruto came running towards him.
'Hey Kiba guess what!'
'What now?'
'Look what I found while on a mission for Grandma Tsunade'
Naruto reached into his weapons pouch and pulled out some suspicious looking scrolls.

'Amazing idiot, you found some summoning scrolls' Kiba spoke, sarcasm lacing this comment.
'There not just summoning scrolls!, there chakra free summons' The blonde spoke, ignoring the dog nin's sarcasm.
'And your telling me this why?'
'If I walked into Grandma Tsunade's office with these she would take them off me'
'So?'
'I was wondering...could you please look after them for me while I report to Hokage Sama?'

Kiba rolled his eyes.

'Fine, but what do I get out of it?'
'Uh....you can try out the first one I suppose...'
'Do you know exactly what these summon?'
'It isn't a very powerful scroll so it shouldn't summon anything really powerful'

Kiba sighed at Naruto's idiocy.

'just come pick them up before tomorrow at one'
'Thanks Kiba!'

Naruto dropped the scrolls in Kiba's lap before running off to the Hokage's office.

------------Later that night at kiba's flat: 10:25pm-------------

Kiba had been laying on his bed now for and hour, but something was preventing him from sleeping. Kiba looked over at the scrolls Naruto had asked him to look after.

'Damn you Naruto' Kiba spoke to himself in a barely audible tone.

The dog nin climbed out of bed and walked over to the scrolls, he picked one up and started to make releasing hand signs. A cloud of smoke filled the room as the scroll unwrapped itself.
Black tendrils began to ease out of the scroll wrapping around the young shinobi. Kiba attempted to yell out, but the sound was muffled but a tendril forcing itself into his mouth. Kiba continued to thrash about as more tendrils wrapped around his legs, arms, torso, etc.

When the smoke cleared Kiba was suspended in the air by black tentacles wrapped around his body. Kiba's thrashing was ended immediately by a tentacle slipping its way up his shirt, and in the process ripping the shirt from the nin's torso.

Kiba yelled out again when another two tentacles slipped into his boxers, quickly pulling them them from his body.
The dog nin now lay suspended by thick black tentacles, completely naked. The tentacles forced Kiba's legs apart slipping between the slightly tanned cheeks, rubbing up against the sensitive entrance, adding a small amount of pressure to let their victim know what was next.

Kiba's eyes grew wide, he began to struggle against the tendrils with even more vigor than before, with no success

The tentacle started to force its way past Kiba's virgin hole, forcing the muscle open to allow it access. Kiba screamed as the tentacle broke past his sphincter, ripping the muscle in the process. Blood ran freely from the brunette's no longer virgin hole, his screams being muffled by another tentacle which started to pump freely into the brunette's mouth, leaving a salty taste on his tongue.

The tentacle continued to force itself into the dog nin's bloodied hole before quickly pulling out and pushing in even deeper. Kiba continued his muffled screams as the tentacle ripped and tore at his bloody hole while it continued to forces itself in before pulling out and forcing in even further.

This continued on for another hour, kiba's throat became to sore to scream and was just whimpering.

Kiba let out a silent scream and the tentacle abusing his bloody hole forced itself deeper than it had ever gone before and began to quiver. Kiba's eyes widened as he realized what was about to happen, and struggled to break free from the tentacles, to no success.

The tentacle quivered one last time before it's rich creamy seed erupted deep into Kiba's bowels. Kiba continued his struggles trying to escape the feeling of his stomach and bowels being stretched by the sheer amount of seed being pumped into him.

Kiba's struggles eventually ended when he realized that he wouldn't be able to escape the tentacles grasp. He watched in silent horror as his stomach expanded making him rounder and rounder by the minute.

Suddenly the tentacle which had been abusing the don nin's mouth withdrew and arranged itself next to the other tentacle as his bloodied hole. Kiba let loose a blood curdling scream as a second HUGE tentacle forced itself past his ripped sphincter stretching him further than his limits, blood now openly poured from his hole. The tentacle took no pity on Kiba and continued by releasing it's own load into the brunette, adding to the litres of seed already expanding his bowels.

When both tentacles were satisfied they let loose a shrill ripping sound as they ripped in two leaving a tentacle plug inside Kiba's abused ass making sure that none of the filling escaped. The black tentacles retreated back to the scroll that had released it before disappearing in a cloud of smoke.

It took an hour-and-a-half for Kiba to climb onto his bed, every minute of it he was openly cursing Naruto.

Kiba laid on his bed, his stomach expanded to and almost impossible size. While laying here he then just realized that he hadn't been aloud release during his whole rape. The young shinobi reached down to relieve his achingly hard boner, only to find that his stomach prevented his from reaching it. Kiba groaned his boner still pulsing and incredibly sore.

Kiba had already began to plot his revenge on Naruto, and it would be a lot worse than just one tentacle. 'Just you wait Naruto, just you wait...' Kiba spoke while he chuckled quietly to himself.

Kiba attempted to sleep but his boner became for painful by the minute, until he just fell into a pain induced coma.