Mikasa and Izan regrouped with some soldiers preparing to leave for Wall Sina some of the soldiers were discussing about how the Colossal Titan breached both walls since the titans in Trost district were all killed and then one of the soldiers thought back, the soldier thought of the armored titan and he mentioned it. This gathered Izan's attention; Izan approached the group and asked "what's this about an armored titan". The group was silent until one of the soldiers had enough courage to tell Izan the story. The soldier spoke "the gateway into Wall Maria was breached by a titan we call the armored titan because of its thick bone-like armor that protects its body, we believe it breached Trost District's gate since we blocked off the gate with a large boulder, it must have weighed a ton. Well… Eren did anyway". Izan didn't understand and stated "how did Eren block off the gate he can't lift a boulder of that size".
The soldier responded with "Eren has this power where he can transform into a titan!" Izan looked stupefied when the soldier said that then he thought "of course… now it makes sense, now I see why they need my cousin… they need his power because it would give them a greater advantage". Izan refocused on the group of soldiers and said "thanks for the information; I'll leave you all alone now." Izan returned to Mikasa who was gathering extra supplies to take with them. Izan approached Mikasa after and asked "why didn't you tell me my brother Eren had the power to become a titan", Mikasa was caught by surprise by this question and answered truthfully "I thought you would want to exterminate him along with all the other titans, so I took precautions".
Izan irritated, he waved his hands around and smacked himself in the face. Izan mumbled as he walked to a corner, crossed his arms and stared at a wall. Mikasa looked amused but disturbed by Izan's childish moment. Izan re approached and cleared his throat. Mikasa asked Izan "what was all that", Izan responded with "it was me trying to blow off some steam in a childish manner". Mikasa giggled at Izan and said "you were the last person I'd suspect to do that", Izan looked insulted and turned away before saying "then I won't do it again".
Izan spoke seconds after his last sentence "I wouldn't kill a person if they had that power unless they were opposing me in combat"; Mikasa was confused for a second by this statement but then she thought of the previous conversation about Eren. Mikasa responded to the sentence "good, I'm glad you understand". Izan spoke again "if I did think like that, my cousin would have been my first victim" Izan crossed his arms and asked "so now that we're here… how do we get to Wall Sina". Mikasa pointed to the stables and in them were horses. Izan spoke "horses, we're going to ride horses across kilometers of open land. Well I guess it's better than walking". Mikasa remained silent and thought Izan would continue to speak but instead he remained silent as she did. They gathered the rest of the supplies that they needed for the great journey that may take the rest of the day. All they hopped was that Eren was either already there or soon departing for Wall Sina.
Just before leaving for the last wall, Izan thought about Hellflix and how he could help. They were all on horseback and the soldiers including Mikasa were leaving but the final soldier noticed they were one man short… Izan didn't move. The soldier stopped and asked Izan who was dismounting the horse "aren't you coming with us", Izan spoke "I have to find someone, if I don't return before a month… I'm most likely not coming back". The solder responded "if you do not follow us, you will be considered a deserter", Izan spoke "so be it". Izan tapped his armor twice and he became covered in armor. He got back on the horse and left the group, he headed deeper into titan territory. Izan's words echoed in Mikasa's head "so be it", they continued toward Wall Sina and left Izan to his business. Mikasa hoped for Izan and Eren's safety.
Eren had already departed for Wall Sina hours before and had just arrived to Wall Sina. They were escorted by some soldiers into an underground 'city', and about three hours later Mikasa and the rest of the soldiers arrived to Wall Sina. They were treated the same way and were guided to the underground complex. Shortly after they were shown to their temporary base Mikasa met up with Eren.
Eren spoke first "where's Izan", Mikasa took a deep breath and said "Izan left to go find someone; I assumed it was you, but it may be that man that we met in the forest less than a week ago" Eren thought back to the moment in the forest when he met Hellflix and said "I'm starting to lose trust in Izan, this is the second time he left by himself. The first being when he went to see that Hellflix guy. I think that may be where he went". Mikasa then decided that Izan had went to find Hellflix and asked "when do you think he'll be back" Eren answered "he might be back in a few days if he doesn't receive any interference, but if he does it will most likely take him a week". Mikasa noticed that there were people leaving a building with a food ration so she told Eren that they should get their food ration while they had the chance. The thought of Izan didn't cross Mikasa's mind till later that night.
It was early the next morning when Izan reached the forest and he rode deeper into the large woodland after stopping for a minute to drink the remaining water out of a flask. He came across a few titans on his way to Hellflix's platform, but strangely those titans paid little to no attention to Izan. Izan continued to the platform. When Izan arrived he saw Hellflix who was departing with his compound bow and stopped him by yelling out "Marcus".
Hellflix turned his head left to see Izan's heavily armored body about ten meters away. Hellflix and Izan walked toward each other and did their special handshake. Hellflix asked Izan "what are you doing here" and Izan responded "the second wall was breached and I need your help to recapture it" Hellflix spoke "well I can help but you'll have to do something for me in return", Izan asked "what do you want me to do then". Hellflix had a demonic look and grinned at the thought of what he was going to say. Izan thought for a second "I don't know what he's thinking… but it's probably going to involve bloodshed".