Years later, Max is now a senior to an ultra named Ribut. Unlike his previous seniors, Max treated Ribut nicely and always supported him.

One day, Ribut was reading some archives and accidentally found an archive that mentioned Frost's name. He had never heard of Frost before, but the archive mentioned that Frost was an Ultra who was exiled from the Nebula M78 . It just didn't mention the reason why Frost was exiled.

Ribut's curiosity made him want to ask his senior, Max, about it.

"Max-senpai, may I ask you one thing. Who is Fro-Hmph?!" Ribut couldn't finish his question because Xenon suddenly closed his mouth.
"What's the matter?" asked Max who didn't have time to listen to Ribut's question.

Nervously, Xenon tried to change the subject.

"Ribut said, the weather on Earth is now entering the rainy season. So the temperature is cold, although not as cold as other regions on earth that are entering winter," Xenon answered. Meanwhile, Ribut tried to release Xenon's hand that covered his mouth.
"Is that so?" said Max, then he refocused himself on the report he was working on.

While Max was busy, Xenon took Ribut to get him away from Max.
After they got away from Max, Xenon removed his hand that he had previously used to cover Ribut's mouth. Ribut seemed to be breathing heavily.

"Xenon-san, why did you do that?" Ribut asked. Xenon held both of his shoulders.

" Ribut..."

Ribut looked at Xenon, as if he understood that Xenon wanted to tell him something important.

"Don't ever mention that name in front of Max!" Xenon said.
"You mean Frost? What's wrong with that name?" Ribut asked.
"That's right. He's an ultra who has been exiled for a long time and the reason he was exiled is related to Max's injury," Xenon explained.
"What do you mean by Max-senpai's injury? He's fine," said Ribut.

Xenon took a deep breath. "It's not a physical injury, but Max is actually mentally injured. If you mention Frost's name in front of Max, it will trigger his trauma," Xenon explained.

"Really? What did Frost do to traumatize Max-senpai?" Ribut asked.
"I want to tell you about it, but you'll definitely feel scared, even though you've never experienced it," Xenon replied.
"That's okay, Xenon-san. It's better to just tell me. That way, I'll be more careful when talking to Max-senpai," said Ribut.

Finally Xenon told everything that happened in the past, and Ribut who listened to it all, showed the same reaction as Astra after he learned of the terrible events that happened to Max.

After that, Ribut promised that he would never mention Frost's name in front of Max.

Omake

"Is it okay if we do this?" asked Tiga who was watching Dyna who was burning something.
"It's okay, Tiga. That damn ultra doesn't live here anymore anyway," replied Dyna. Then he picked up the marshmellows he had skewered, and handed a packet full of marshmellows to Tiga. "Here, if you want some!"

Just then, Trigger and Decker arrived.

"Tiga-san, Dyna-san, what are you doing?" asked Decker. Meanwhile, Trigger was watching the fire that was burning something that Dyna had previously piled up.

"Dyna-san, why did you burn those documents? Shouldn't they be kept?" asked Trigger.
"Oh this? Leave them alone. After all, these documents belonged to an ultra who was exiled for his dirty deeds, and we don't want to remember that incident," replied Dyna.
"What happened?" asked Decker.
"If I tell you, you'll get nightmares," said Dyna.
"Just tell us about it. Besides, we're mentally strong!" said Decker.

"Then, you two sit here. Let us tell you, but promise not to mention that name in front of Max," said Tiga.

Trigger and Decker nodded their heads, though they were still a little confused by Tiga's last sentence.