"Eren! Of all the crazy things you've done... this has to be the most-" Grisha coughed while bedridden.
Standing in the room with a sick Grisha, were an Adult Eren Yeager, Frieda Reiss and a young adolescent Ymir Fritz. Eren and Frieda were dressed in green trench coats and Ymir had worn something different.
Shortly after Ymir Fritz arrived in the future, post two thousand years... she had been taken care of, like a normal child. After setting foot into the capital, Ymir was fed and bathed by Frieda Reiss, herself. Afterward, Frieda dressed Ymir in some new clothing. From then on, Ymir had worn a cerulean-colored dress that covered her knees over a short, white-sleeved shirt with a thin black headband on her head and a pair of short black Jary Jane shoes. Her blonde hair had been cut shorter, reaching down to her neck level.
"There is no other way, dad." Eren replied.
"I know that, Eren." Grisha turned his gaze toward Ymir Fritz. "But, traveling through time and involving the first Founder? Aren't you afraid that this act could lead to dire consequences?" Despite feeling weakened by Ymir's Curse, Grisha felt worried.
"Consequences?"
"Yes, Eren... you have potentially changed the future for Eldians by bringing Ymir Fritz to this timeline. Without Ymir Fritz to start the Titan history, two thousand years ago..." Grisha coughed, softly. "Eldians will cease to exist."
Eren stared at Grisha for a few seconds. "I knew you would say something like that." Eren walked over to the bed where Grisha was ridden. "But there are some things you and the world got wrong, though." Eren bended his left knee in front of Grisha, then looked back toward Frieda who stood in the room.
Frieda took this as a sign and then covered both of Ymir Fritz's ears.
"Eldians existed long before Ymir became the first Titan. And it wasn't Ymir Fritz who started the Titan history. It was the king who enslaved her, called Fritz." Eren said.
Grisha gasped. "What?"
"Yeah." Eren nodded. "As soon as Ymir made contact with the "Source of All Living Matter", the King used her to wipe out most of his enemies and built a massive empire, under Eldians. Then, he forced Ymir to birth his offspring when she was a teenager. And when Ymir finally died, he forced their daughters, Maria, Rose and Sina to eat her corpse so that the Power of the Titans could keep living on. And it's been happening for the past two thousand years." Eren told Grisha.
"Eren... h-how do you know this?" Grisha asked.
"I first met her through Zeke and I saw her memories." Eren had answered.
Grisha looked shock and paralyzed after hearing Eren's story. "I see... it all makes sense, now." Grisha then raised his head slightly higher. "So, The Great Titan War... and the World's hatred for Eldians... it all started back when the King..." Grisha then summed it all up. "Tell me... Eren. Now that you helped "this" Ymir escape such fate... what are you planning to do with her-after you heal me?"
"I plan to let Ymir stay in the walls for a week-just so that she can see how capable Eldians are. After that, we're taking her back to her own timeline." Eren told his plan to Grisha.
"That is understandable." Suddenly, Grisha started coughing sickly. He accidentally coughed up some blood in front of Eren.
Eren could see blood hanging from Grisha's lower lip. 'It's time!' Eren then quickly looked back to Frieda, again. Letting her know that he's done telling Grisha what truly happened.
Frieda nodded, then removed her hands from Ymir Fritz's ears and brought her over toward Grisha.
"Are you ready, dad?" Eren asked as he stood back up and stared down at Grisha, who was dying from the curse and seemingly didn't have long to live.