Season 3, the final season of Heaven's Hell, consists of Arcs 7, 8, and 9.

In Arc 8, Erica and the others head to the Principal's father's house in a race to obtain the seal before Lupercio's minions do.

The way that she finds out is through and old book about the Four Sages that her father had wrote only for Kato eyes.

However, somehow the Children Of Lupercio also find out about this, and thus confront them as they attempt to get the seal.

It's right before the final Arc of the anime, and it would have started later. But due to me freeing Merlin, she was able to tell Principal the fact that she was a descendant of the Four Great Sages, and that her father currently holds the seal.

It makes me wonder how she knows about the whereabouts of the seal with her Clairvoyance but not about what happened to the Sages...

"W-what?" Principal stuttered, taken aback.

"Oh, I thought you knew." Merlin replied. "The Kato's are one of the Four Great Sage families."

"But...how?" Principal asked. "How did I not know...?"

"I guess your father hid it from you." Merlin stated. "You'd have to ask him."

"I can't believe this." Principal said, rubbing her temples. "I'm calling him now. Everyone, on the jet. We need to go."

We climbed onto the jet. It was a cramped for all of us, but we were able to fit inside. The only people who weren't cramped were the pilot and Principal who sat in the copilot seat.

Principal dialed a number onto her phone, bringing it up to her ear. As she waited for the call to go through, she nodded for the pilot to start the jet.

We fastened in our seatbelts, the best we could anyway. We didn't have enough seats so some people had to sit in other's laps.

And somehow I was sitting on Merlin's lap.

"Why?" I asked, looking at her annoyed.

"Would you rather have this or where one of these girls sits in your lap and their butt rubs against-" Merlin started.

"I get it." I growled, cutting her off as I felt my face start to heat.

Don't think about it.

Merlin only giggled as she saw me get slightly flustered.

"I thought that after losing your v-cars you'd get more used to this." Loki teased.

I'm still a hormonal teenager, cut me some slack.

The jet started to drive forwards through the clearing. I was a little worried that the clearing wouldn't be large enough, but we soared over the trees and into the sky.

"Hey Dad." Principal said, her call connecting through. "I have something to ask."

I couldn't hear her father's response.

"...so, are the Kato's really a Four Great Sages family?" Principal asked.

"...Merlin, aka the trainer of the Four Great Sages told me." Principal stated.

"...I can't believe you hid this from me. I'm already an adult, when we're you going to tell me?" Principal asked.

"...Why? Why would you want to hide this?" Principal continued to interrogate.

"...But this is a huge legacy, and you're not passing it down to your descendants! I understand trying to keep them from being snobbish, but they deserve to learn at some point." Principal continued.

"...So that's why you didn't like me being an adventurer, huh? I get that." She replied.

"...Look, that's not all I wanted. Do you...still have the seal?" She asked.

"...Again, Merlin. We need it. He's coming back." She stated.

"...The Demon King." Principal replied.

"...I know, I don't plan on dying. But if I don't do anything we'll lose this whole world to him. I have to do something." She continued.

"...Thank you. I'll be there in tomorrow. First I need to prepare in case anything goes wrong." She stated.

"...I don't know, but it's better safe than sorry." She added.

"...Alright, love you. Bye." Principal hung up.

She turned towards us. "We're heading back, and then we'll plan what to do from then." She stated.

"What do you mean?" Erica asked.

"I'm going to send a couple of you to get the seal from my Dad." Principal informed. "I would go, but with everything that's going on I need to be here in case something else happens."

"And you're the only ones I can trust if the Demon Kjng really does have inside men." She replied.

"I can't believe this..." Lily muttered. "THE Demon King? He's really coming back...?"

"It's alright." Merlin stated, patting her on the shoulder. "We can do this. We'll seal him away again."

She said that, however I couldn't help but wonder if sealing him really was the right way to go. That's what they tried to do in the anime. If I had saw the last episode, I would have known if they had succeeded or not.

But this isn't that reality. Arc 8 is already starting when we haven't even done Arc 7.

So is sealing him the right way to go? What will make this time different from last time? I can't help but think the only way to end this is to end the Demon King.

But I don't have the power to do that.

"If we seal him, we can at least buy ourselves more years to power up until the Demon King arrives." Loki suggested.

I suppose that's better than nothing.

We sat in the jet in silence. Everybody was still soaking in the fact that the Demon King was coming back. The one who almost enslaved our world 50 years ago.

Principal's phone started to ring. Picking it up, she placed it to her ear. "Yes?" She asked.

As she listened to whatever the person was saying, her face went pale. "...What? Are you serious?"

"...Oh god." She muttered. "Just...just let me call you back in a minute. I need to think..."

She hung up, placing her phone back into her project and setting her face into her hands.

"Is...everything alright?" Erica slowly asked.

"Brandon Tsuki...has gone missing." Principal stated.

"...what?" Bianca let out a low sound.

"He and one other S Rank entered an A Rank Open Rift. Usually they'd be done in a couple hours, but neither have come back out." Principal explained. "It could be nothing, but for two S Ranks...?"

And I suddenly realized. This is the beginning of Arc 7. So now not only Arc 8 was pushed up, but so was Arc 7.

So now they were going on at the same time. This isn't good...

This means that the Demon King's return had also probably been pushed up despite everything I've done to defy him.

And now both Arc 7 and Arc 8 are going on at the same time. This isn't good, especially with how dangerous Arc 7 is.

But to explain that, first I'll have to explain what exactly an Open Rift is. Most rifts are unstable And thus close shortly after the monsters come through. However, an Open Rift is stable enough stay open for a couple days, which is why it's called an open rift.

Open Rifts are also ranked with the letter scale, which is quite a confusing thing since there's already like three other things that have that scale.

However, the highest known rift is an A Rank rift. No rifts have appeared that would be classified as S Rank.

Open Rifts rank are determined by the amount of magic that they let out. With more magic, they have stronger monsters, and thus they get a higher rank.

Because Open Rifts are much more dangerous than rifts, since you're going into enemy territory, only actual adventurers are allowed in. At least, most of the time.

Arc 7 kicks off when Brandon Tsuki and another S Rank who's name I can't remember go missing in a rift.

Then Erica and Bianca persuade the Principal to allow their group to go inside as long as the Principal comes with them.

It's inside they fight monsters and end up finding the other S Rank. With her help they find Brandon, who was captured by Kurebai, who I believe is The Alchemist.

Kurebai creates a device which drains Brandon's powers, leaving the strongest S Rank in Japan powerless.

While Erica, Bianca, and the others save him, it's already too late for his powers. While not stripped of his Arcana, he internally doesn't have the power to activate it.

If possible, I would like to prevent that from happening. Brandon would be a powerful ally and it would be great if his powers weren't drained.

"Damn it." Principal growled. "What happened, Brandon? He better be alright."

"Principal." Bianca said. "I want to go in."

"Bianca, I can't let you..." Principal sighed. "I'm sure he'll be fine..."

"I don't know." Merlin sighed. "With everything that's going on, I bet this is connected to the Demon King."

"You don't know?" Principal asked Merlin.

"My Clairvoyance only works for the world that I'm in. Since Brandon is in another world right now, I sound t be able to see what happened to him inside." Merlin explained.

"Principal, please." Pleaded Bianca. "I don't...I don't want to lose my brother..."

Principal flinched at Bianca's display of sadness. "Bianca..."

"Principal." I said. "What if some of us went to obtain the seal and the others went inside the Open Rift to find out what happened to Brandon? Goku Taiyou could come with us and you could go get the seal."

Principal sighed. "I'd rather not leave Tokyo...not right now, but....fine. We'll do it that way. But I don't like it, it's risky."

"Thank you." I replied.

Bianca glanced at me, a light smile on her face.

"Alright." Principal decided. "Here's what we are going to do. Iris, Lily, Yui, Amber, and I will go obtain the seal. Ken, Bianca, Erica, Aoi, Irene, and Goku will go inside the Open Rift."

"What about Merlin?" Erica asked.

"I'm a liability. I can't do much except for teach now." Merlin sadly smiled. "It's fine. I'll keep watch on the city and let you all know if anything changes."

"That would be greatly appreciated." Principal nodded. "Alright, this is our plan. Just...be safe everyone. I don't want to lose any of you."

"We will." We all nodded.

"Alright." Principal nodded. She nudged the pilot on the shoulder. He took off the right side of his headphone so he could hear her.

"Take us to the Open Rift."