Authors Note: Hi! So, I'm not dead! And I'm updating this. Isn't that a surprise. I don't really have any excuses as to why I haven't updated in like 3 or 4 months (ish. I don't really know) other than I just didn't have much inspiration and was too lazy (that's a big part of it. Sorry). But here I am, updating now, so I hope you like the chapter. Also, I was rereading this and I noticed some things that I feel like talking about (not the obvious grammar mistakes. I'm just going to ignore those). First, for some reason, I chose not to have any indents, for reasons I am not sure of. But I am going to indent from now on. And second, I censored some of the swear words and some of them I didn't (and when I did I did it wrong) so I'm not going to do that anymore. So with all that said, enjoy the chapter!

P.S. I forgot to put this on the other chapters, but I don't own Harry Potter or Assassination Classroom.

When Nagisa woke up on Saturday morning, it was to a room full of empty beds. Sitting up, he glanced around the room to make sure that he was, indeed, alone. He was. He slowly slid out of bed, wincing slightly when his feet hit the cold stone floor. He made his way to the trunk at the end of his bed, pulling out a grey t-shirt and a pair of jeans. After a second of contemplation, he grabbed a black hoodie as well. After quickly getting ready, Nagisa made his way down to the common room in search of his dorm mates (mostly Karma. He was a bit like a child. The longer he's been quiet, the more concerning it is). He found them crowded around a large bulletin board with various pieces of paper on it. He caught sight of a head of vibrant red hair on the outskirts of the crowd. Grabbing Karma by his shoulder, Nagisa dragged him away from the crowd.

"What's so interesting about the bulletin board?"

"Apparently, next weekend all the students from grades 3 and up can go to the little town by the school," Karma replied with a small shrug.

"So they're just letting a bunch of teenagers loose in a small town? And they think that this is a good idea?"

"Yeah. Remember the sheet we had to get signed to go to Hogsmeade?" Nagisa nodded. "That's what it was for."

"Oh. What is it with wizards and naming stuff after pigs?" Karma just laughed, shaking his head.

"So what's the plan for today? Since we have the day off and all."

Nagisa lowered his voice, switching to Japanese for good measure. "Well obviously, we have to come up with a plan to make sure Harry's safe from Sirius Black."

"Duh, I was more talking about where and when we were making the plan."

"It's kind of cold, so we should probably do it inside. I was thinking the library if that's okay with you?"

"Kind of boring, but I suppose it'll do. When? After breakfast?" Nagisa just nodded, turning to leave the common room. Karma followed him, stepping through the portrait hole into the dungeons. The colourful haired duo made their way to the dining hall, walking over to the Slytherin table as soon as they got there.

"So," Nagisa began, looking across the small table towards Karma. "The plan? Do you have any ideas?"

"Well, it's a bit difficult considering the fact that we are not friends with Harry, or even in the same house as him. It would be a lot easier if we had an excuse to spend with him."

"Yeah. And since we're in different houses we don't spend that much time by him during the day. But we should start by doing small things like sitting by them in the few classes that we have together, try to form a bit of a friendship."

"And it'll be easy enough to keep an eye on him during the Hogsmeade weekends, it will probably be busy enough for us to just follow him around without seeming too suspicious."

"We'll have to talk to Dumbledore about finding a place to train. It would definitely be weird for us to train out in the open. And we'll have to figure out some kind of patrol schedule. And where-" Nagisa was cut by Harry, Ron, and Hermione loudly entering the library.

"It's not fair!" Ron was complaining loudly. "Just because your Aunt and Uncle are stupid muggles who don't want you to have any fun! You can't miss Hogsmeade!" Harry scowled.

"It's not like I want to miss it, Ron. I don't have permission. You can't go to Hogsmeade without permission. You guys will just have to have fun without me."

"Come on, Harry! You've got to try harder than that! You should ask Professor McGonagall, she's our head of house, maybe she'll be able to help!"

Hermione crossed her arms, scowling at her two friends. "You shouldn't be encouraging Harry to break the rules, Ron. And besides, Professor McGonagall would never do it. She doesn't do favouritism."

"Still… it's worth a try."

Karma turned to face Nagisa, his eyes wide. "He's not going to Hogsmeade?!"

Nagisa rolled his eyes, "Why are you asking me? You heard it just as well as I did. We're going to have to adjust all of our plans now."

"Yeah, I guess we're not going to Hogsmeade anymore?" He paused, looking to Nagisa for confirmation. The bluenette shook his head. "Damn. I was looking forward to that. Well, I guess we'll have to just wait for next weekend and see if we can catch Harry. If all his friends are going, maybe he'll be willing to study with us."

"That would give us a good way to get closer to him."

With their plan decided, Karma and Nagisa set about discreetly watching Harry and his friends as they did their homework a few feet away from them.

"So you want an area to train?" Dumbledore asked, looking at the two boys sat across from him. They both nodded.

"We need to keep in good shape if we want to be able to help protect the students and catch Sirius Black." Karma explained to the Headmaster, who just nodded solemnly.

"Very well. I know just the place. It's on the seventh floor across from the tapestry of Barnabas the Barmy trying to teach trolls to dance the ballet. You will have to walk back and forth past the black wall across from the tapestry three times, thinking of the training room you would like to appear. Then a door will appear leading to the room. Now, if that's all you needed, you may go spend the last of your weekend doing something more interesting and productive than talking to me." They nodded and stood up, heading out the door.

"Thank you, Headmaster," Nagisa said before he left the room.

The next week past by quickly. They kept an eye on Harry, Ron, and Hermione, or the Golden Trio, during their lessons together. They had spoken to the group once or twice, but that was it. Before they knew it, it was the day of the Hogsmeade trip. Nagisa and Karma walked up to breakfast together, making note of the fact that the Golden Trio was sitting at the Gryffindor table (like always, not sure what else they expected).

Once Harry said goodbye to Ron and Hermione, he made his way up to the Gryffindor common room. About halfway there he realized that it would be mostly first and second years and changed his mind. After a moment of consideration, he decided to go to the library and do homework (Hermione was rubbing off on him).

He was working on a potions assignment when the two exchange students walked in. They sat down at the table next to his and, with a quick glance at him, got out some parchment, quills, ink, and books. After half-watching them half-working for almost 10 minutes, he decided to ask them the question that had been in the corner of his minds since the two had walked in.

"You two ARE in third year, right?" They both looked up from their work, looking surprised at being randomly addressed out of nowhere. After a moment of awkward silence, Karma responded with a confused nod. "I'm just surprised that you're not in Hogsmeade like everyone else."

"Oh," Nagisa began with a small laugh, "We decided to use the time to do homework and practice spells. Since everyone else has been learning here for two years and it's kind of different back in Japan. So we wanted to give ourselves a chance to catch up, you know?"

"I guess it must be harder with the language barrier too, huh?"

"Yeah, luckily we had a good English teacher. But since we learned all the spells in Japanese, it's just a lot to get used to now that it's in Latin." Karma explained before looking back down at whatever he was working on.

"I'll just leave you to it then," Harry said before packing up his stuff. He decided to go visit Hedwig, having nothing else to do.