He used the powers of the Founding Titan to alter her body!

Later at night, Sasha is one of the guards on duty to keep the Marleyan prisoners in check in their cells. And as expected, she falls asleep on duty while standing. And as she is about to collapse on the ground, Eren caught her time!

"Dang it, Sasha!" Eren said as he's holding her in his arms. He then turned around and give order to the other guards.

"I will take her to rest. She done a lot already for today anyway." Eren said to the other guards as he's taking Sasha away from the cells. They nodded and then either turn to look at the sleeping Marleyan prisoners or keep on patrolling.

Once out of sights, Eren begins to use the Founding Titan's powers on Sasha to alter her anatomy. Her breasts slowly growing bigger and bigger while her hips becoming wider and wider little by little. And when she reached the condition he desired, he stopped.

Then, he entered a closet that keep the cleaning tools with her **** body and lock the door. Once inside, he begins to strip both her and his own clothes off.

As he is now staring down at Sasha's nude body with big breasts and wide hips with such intentions, his erection is getting stronger and stronger. So he slowly puts himself on top of her sleeping body and begin to insert his strengthened penis into her pussy, making her bleed by deflowering her in the process.

"Hmm." Sasha moaned as she's sleeping after Eren penetrated into her bleeding pussy with his cock.

After that, he begins to move back and forth, pulling his penis in and out of her as his chest is pressing on her huge and soft bosoms.

As Eren is slamming against her virgin pussy with his cock repeatedly, he then reused the Founder's powers on her once again. This time, he increased the fertility of Sasha's womb and eggs to make sure that she is fertile as much as possible!

Then, he begins to increase his speed, slamming his penis into her harder and faster gradually. Luckily, Sasha is in deep sleep at the moment, clearly tired after a long day.

Inside of her body, his penis kept assaulting the entrance of her womb again and again, attempting to break in and unleash his seeds inside of her womb as it is pulsing and throbbing due to the gathering of his semen in there.

"Mmm. Hmm." Sasha moaned as she's being **** by one of her friends without knowing about it while Eren tried his best to remain silent and not allowing the feeling of joy to make him let out a cry of pleasure that is surging throughout his body at the moment.

As he keeps slamming her harder and faster, the more and more her huge jugs of breasts are bouncing against his chest as he repeatedly slamming his chest down on to her boobs as he's **** her in her recently deflowered virgin and bleeding pussy.

Eren does not know how long has it been since he started **** Sasha while she is asleep and he does not care. All he cared is finishing this as soon as possible and hope that it led to the outcome that is neither the destruction of Paradis Island or the Rumbling.

And after a few more powerful thrusts, Eren reached his climax! And unknown to him and her, Sasha also unknowingly reached her climax as well

"Hmm!" Eren and Sasha moaned at the same time as both of their bodies reached orgasms together!

Despite still being asleep, Sasha's body responded to the orgasm by dropping an egg inside of her womb as Eren is unloading all of his semen inside of his penis into her womb with no intention of pulling out!

After he finished, Eren simply redressed himself and Sasha, who is still sleeping, clean the small pool of bloods that came from him taking her virginity earlier, leave the closet with her in his arms and take her to her quarter to sleep. Also, he decreased the size of her hips back to the relatively normal size but allowing her boobs to remain huge just like after he altered her body earlier.

In his mind, Eren can only hoped that the act of **** and impregnating Sasha with his seeds will be able to give him and the island the positive alternative.

Unbeknownst to Eren and Sasha, one of his sperms actually made it to Sasha's egg and begin penetrating it! And when it successfully penetrated inside and begin the fertilization, the first step to change the future has officially happened!