That afternoon, classes proceeded as usual. The only peculiar thing was that Yukino's behavior patterns were still a bit strange. However, with slow adjustment, she would get better. Ren-kun had no problems at all.

After school, he returned home. As soon as he lay on the sofa, he opened the Chat Group. The group was in a heated discussion.

March 7th: "Saeko, how are things on your end?"

Saeko Busujima: "The school is quite chaotic. A few classmates are moving with me, and for now, it's relatively safe."

Exusiai: "I think we should stay away from the school. There are too many people in the school."

Saeko Busujima: "I think so too. We've already planned to escape and look for a friend's parents along the way."

"???"

Ren-kun was puzzled. It sounded like something had happened where Saeko Busujima was. "Could it be a zombie outbreak?"

Ren: "@Saeko Busujima, what happened?"

Saeko Busujima: "Ren-kun, just as you said, a zombie-like virus has erupted, turning humans into Dead Bodies. Thanks to Ren-kun's warning, I had some preparations."

Ren: "..."

Alright, it was true.

Exusiai: "Ren, do you have foresight?"

Ren: "Sorry to disappoint you, I'm not a fortune teller and I don't have foresight. I just have some simple information."

Ren: "Don't talk about that. Saeko Busujima, if you need any help, just say so. I'll help if I can."

March 7th: "Exactly, exactly! I can buy another gun from Asta!"

Ren: "March-chan, thank you for the gun; it was very useful."

March 7th: "Hehe."

Ren still wanted to understand the situation when the Chat Group system suddenly appeared.

[The Doomsday Chat Group has detected a future Doomsday outbreak in group member Saeko Busujima's world, initiating Doom Companion!]

[Doom Companion]: Three-person team

[Companion Time]: 5 days

[Companions]: Saeko Busujima, Ren Kazama, Exusiai

[Companion Mission]: Do your best to clear Dead Bodies

[After starting the Doom Companion, the Companions will be teleported to Saeko Busujima's world, and time flow in their own world will stop!]

Saeko Busujima: "This is..."

Exusiai: "Does this mean I can go to Saeko's world to help?"

March 7th: "!!! What a powerful function, crossing worlds, even more amazing than the train transcending the stars!"

Aqua: "Huh? Why isn't it me going? This Goddess is best at dealing with undead creatures."

Ren: "..."

[Do you want to cross worlds immediately?]

To be honest, Ren-kun hadn't expected the Doomsday Chat Group to have such an ability. This was no longer a simple communication platform. It should be called a mutual aid platform.

Ren: "I'm going over now."

Exusiai: "Oh, oh, oh! I need to prepare more etching bullets!"

Ren chose to cross worlds. A void, swirling black hole appeared before him. "Teleportation gate? Crossing gate?" He walked into it.

After a dizzying spin, the world lit up again. Opening his eyes, Ren-kun was no longer at home. He looked around. It was a rooftop.

Suddenly, another black hole door appeared. A red-haired, short-skirted beautiful girl walked out of it. She held a gun that looked like a Vector in her right hand. It should be called a submachine gun. The most striking thing was the glowing halo like an angel on her head and a pair of light-shard-shaped wings on her back.

"Hello, are you the boss?" Exusiai smiled and waved at Ren-kun.

"Boss?"

"Haha, I got used to calling people that when taking commissions," Exusiai scratched her hair.

"Just call me Ren." Ren extended his hand. Exusiai naturally clasped it lightly.

"Exusiai." Exusiai curiously scrutinized Ren. She looked him up and down, left and right. "No distinguishing features. Are you from Aegir?"

Ren gave a wry smile, "I'm not from Aegir. Most humans from other worlds are probably different from the humans in your world now."

"Or rather, many people in your world are considered anomalies in the eyes of humans."

"Like you, for instance, you resemble an angel."

"Oh, what a strange setup indeed." Exusiai scratched the back of her head. She only felt it was odd, but she could accept it.

She looked out at the campus from the rooftop. "Wow, it's really chaotic." The campus was already in ruins. Dead Bodies were rampaging everywhere. Blood and gore were everywhere. Despite this, Exusiai showed no fear, but rather some excitement.

"Big brother Ren, should we ask where Saeko is?"

"No need, follow me." Under Exusiai's shocked gaze, Ren flew into the air. He simply manipulated the wind. With Lv4 Vector Manipulation, plus his Original Stone ability, controlling these vectors was effortless.

Just as he was about to fly away, Exusiai urgently called out to him. "Wait, wait, wait!"

"Hmm?" Ren turned his head in confusion. Exusiai pointed at herself with her index finger, "I can't fly!"

"Huh?" He looked at the small light wings on her back. It only then occurred to him that Exusiai wasn't a real angel; she couldn't fly!

"Ahem, then, shall I carry you?" Ren asked awkwardly.

"Come on, come on!" Exusiai's eyes lit up, and she nodded like a pecking chick.

He landed and picked up Exusiai in a princess carry. Exusiai wasn't heavy; rather, she was quite light. From her figure, she was also very well-built. Exusiai openly wrapped her arms around his neck. She looked expectant.

"Let's go." He carried Exusiai into the air.

"Oh, ho! Is this flying? So cool! I love this feeling! Take a picture!" Exusiai yelled excitedly, and Ren shook his head, chuckling. Exusiai was truly an optimist.