"Good evening, my brotheerrrrr~" She said whimsically with a big grin on her face.
The line alone confirms that she's really Yuki, Masachika's sister.
Masachika slowly wraps his arms around his sister, Yuki.
"I'm... I'm so glad you... Yuki... I'm so glad you are okay..." He said while lightly sobbing, trying to contain his joy.
Yuki, in response, wraps her arms around him as well.
Masachika felt something was in the way during their hug but decided to not give it any thought.
"Me too... I'm so glad I found you... I always knew you are still alive." She said while enjoying his embrace.
"Where have you been all this time..." Masachika said while hugging her even tighter.
"So, are you going to let me in? I have a lot of things to tell you." Yuki said while staring up to his face.
"Oh, right. Please come in."
Masachika quickly releases her and invites her into his apartment.
Yuki then presses a button on a big black suitcase, causing it to glow and begins to follow her.
"Wow, are you going to stay over? I see you are bringing a lot of stuff over." He jokingly said to her.
"...I'm sorry about this." Yuki told him while looking down.
"...Why are you apologizing to me? I'm happy that you are here. I have been living alone here for far too long, so your arrival is very much welcome!" He said to comfort her.
"Well... I don't think you got what I mean but I think we should talk about that the last."
"Works for me." Masachika complied.
Yuki sits on his bed while Masachika sits on a chair nearby.
"Ah, how long was the last time I got to your bed?" She said while inhaling the scent like a pervert.
"Don't make it sound so wrong." He reprimands her.
"And when was the last time you reprimanded me?"
"...Really long ago. Well, glad to see you haven't changed at all, Yuki."
"Likewise. Not 5 minutes after our reunion and we are back to how we used to behave."
"Old habits do die hard, I suppose."
"Now, do you have any question for me? Given that you are working at a cash register, I know you are awakened from cryostasis the last." Yuki said to her brother.
"What do you mean by that? Wait, how do you know I work as a cashier?" Masachika asked in utter confusion.
"That's how I found you. One of my employees found you while shopping in the store you worked at."
"I can see that. But how do you know about I'm on the last batch of people revived from the cryopod?"
"The government awakened people they deem as talented first, then the less next."
"Wait! They were looking down on me!?"
"Well, you did secure a low profile during your school years. And you basically aren't part of Suou family anymore since you went with dad."
"And because of that, they treated me like a slave!?"
"Yes. They plan to make a hierarchical society just like in the old world, part 2."
"Typical elitism...I guess A3 really is defending the old ways of humanity, both the good and bad."
"People that are against them are also revived later than they should be."
"Okay, now that's just petty. We haven't even got the chance to vote for any candidates at all back then!"
"It's all politics disguised as attempt to secure order and manage resources."
"So, the world is still as corrupt as before on the top, while bottom class is suffering even more now."
"Correct. Humanity hasn't changed much even after the massive alien invasion."
"Pathetic. I thought they are all united to fight the aliens off, but even now they still try to profit the ones below them."
"...Let's change the topic then." Yuki said to try not sour the joyful reunion.
"Right, how about our family??"
"Well, mom and dad remarried, and Suou family is even more powerful than it was before."
"That's good to hear. Never thought it would be an alien invasion that reunited them. I suppose there's silver lining to everything."
"Grandpa realized it's a great opportunity to start making alliances, so he tries to get dad back to his side."
"Because he's an ambassador?"
"Correct. Though... Uh..." Yuki pauses her sentences multiple times, hesitating to tell her brother the truth.
"What happened?" Masachika asked worriedly.
"Before I tell you that, let me ask you something..." Yuki said while fidgeting and looking around.
"Hm? What is it?"
"Will you ever hate me?" Yuki asked him, her eyes become teary and fixed at her brother's.
Masachika instantly knew his sister must have done something horrible.
However, there is no way he could blame her. The world is changing rapidly due to the alien invasion, and...
...He knows she must feel like he abandoned her again, just like when their parents divorced during their childhood.
He knows her well, and he knows she will never harm someone without a good reason.
"Never." He declared to her, steadfast in his resolve.
"W-well, I figured as much...But... Thank you..." Yuki said to him, her tears flowing down and deep sighs of relief.
"So... about grandpa..." Masachika asked with a steeled resolve, convinced that Yuki did the right thing.
In response, Yuki also steeled her own resolve and begins to explain everything about their family to him.
"Right... I... uh..."
"His peers are forcing him to join A3's side and... knowing that it's an alien invasion with advanced technology..."
"I tried to persuade him to not side with A3 but... He insisted."
"And he told me to marry someone that leads the A3 in order to secure Suou's place in the new world order."
"So... I went to the gun drawer, and shot him in the head."
Masachika can only reply to her confession of murder with silence.
"I knew you might think that I did it to save our family, to show the aliens that we are on their side."
"...It's not?" He asked her with fear in his heart.
"It's only half of the reason. The other half is because..."
Masachika gulps as she pauses, steeling himself.
Yuki then proceeds to take off her clothing in front of him.
"Wait, Yuki! What are you doing-"
Yuki continues to strip until only her underwear and bra remains.
Masachika can only stare at her almost naked body with his jaw dropped.
"W-what..."
What Masachika saw was his sister's naked body, obviously and visibly on the last term of pregnancy.
"W-wow, I guess I'm going to be an uncle? Who's the lucky guy?"
"...It's yours."
"...Did we... during our graduation party..."
Yuki takes a deep breath to calm herself down and starts telling everything to him.
"You took everyone to a hotel room to sleep after the party, remember?"
"Alya in her stupor was riding your cock, and I was getting jealous and horny at the same time and..."
"Well... you knocked us up."
"I woke up earlier in the hotel, and then I asked Ayano who's standby near to help me clean everything up."
"I only found out I'm pregnant with your baby after you got into cryopod."
"Grandpa... found out about my bloated belly and ordered me to abort it so I'll stay 'pure' for the leader of A3."
"I... chose to protect our baby."
"Not long after that, I get into the cryopod and woke up approximately 7 months earlier from you."
"...Holy, I... Uh..."
Masachika is ridden with more guilt. His debt toward his sister increases again.
He still blames himself even though it was out of his control.
To him, he abandoned his sister he just impregnated alone in the middle of a global alien invasion and forced her to commit sins against her own family members.
"I-it's okay if you want to retract your promise. I understand." Yuki said in hurry.
However, before she can say anything more, Masachika grabs both of her shoulder tightly with his grip while staring at her eyes directly.
"No. I knew you did the right thing."
"Screw grandpa. His elitism broke our family apart."
"You in other hand, saved it from being massacred."
"And, you did what every mother would do to protect their child."
"You saved our child from death. You did what you have to."
"Never ever blame yourself for it."
"Brother..." Yuki said in a trance, not expecting his brother to accept her pregnancy and blame herself.
"I should be the one who apologize to you. I left you alone again."
"I don't want to use the cryopod as an excuse."
"Yuki, you can always rely on your brother."
Yuki grabs his face and kisses his lips. She closes her teary eyes and let her love for him surface.
Not only love as siblings, but also as his woman, and the mother of his unborn child.
"Mnh... Thank you. I should have expected nothing less from you."
"I feel stupid for even worrying about this."
Masachika kneels down, his face on the same level as her pregnant belly.
"M-may I touch your belly?"
"Silly. Of course you can. You're the father."
Masachika gently and carefully caresses her baby bump, feeling everything his hands sensed on her belly.
Her warmth, the fetus' movement, her stretch marks, her belly button that popped out into an 'outie' because of how big her belly is...
"W-wow... So this is how a pregnant belly feels like."
Yuki pats her brother's head.
"Hey... Give my belly a kiss..." She asks her with a spoiled tone.
Without hesitation, Masachika gives her swollen belly a wet and long passionate smooch.
"Mnh... Thank you for protecting our baby all this time, Yuki. I will never abandon you ever again." He said before giving her belly even more smooches.
Then, Yuki starts speaking to the baby while caressing her belly.
"It's your daddy~ Say hello to him, wouldn't you?"
As soon as she finishes speaking, the fetus kicked her womb, making a visible moving bump
"Looks like our baby takes after their mom more. What an energetic little gremlin."
Masachika caresses her belly and kisses her forehead.
"Yuki, I'll take responsibility for this baby. I'm sure Alya will understand."
"Ah, about her..."