HP: Let professors walk towards the light

"I'm so sorry, I think it's better for his head to stay on his own neck."

Harry was pleasantly surprised. It was the little wizard who had just bought something. She was standing behind the witch, pointing her wand at her.

"Hahaha, look, a little wizard is protecting another little wizard. This is Knockturn Alley. Didn't your parents tell you about this?" The male wizard mocked, causing a burst of laughter.

"Little friend, I advise you--"

The little wizard just waved his wand a few times, and the wizards were nailed to the wall.

"Granny, I advise you to let him go. He is not someone you can afford to offend."

"Who are you?" The ghost woman was frightened by the scene, and the tray in her hand fell to the ground. The nails were scattered all over the floor. Harry silently avoided the bouncing nails.

The witch across from him removed her hood, revealing a face Harry was familiar with, but for some reason he didn't seem particularly surprised?

"Reina!" Harry called out to her, the worry in his heart finally settling down.

Reina nodded in response.

"It's you, girl." said the ghost woman.

"So, are you going to let him go?" Lena smiled.

"If I don't let him go, do I have to be pointed at by you with your magic wand?" The ghost granny rolled her eyes. "Take him away. Tell your friend not to come here if he doesn't have the ability. I won't remember your kindness the next time you see me."

"If there really is a next time, you should remember my favor." Lena walked towards Harry, took his hand and walked into a small path.

"Harry, why are you here in Knockturn Alley?"

"I'm lost... It's Floo powder..." Harry said hoarsely, "Where is this place?"

"Knockturn Alley is next to Diagon Alley. It's not a good place. It's very dangerous and there are many dark wizards there. You'd better not go there." Reina explained.

"I said I was just lost. I got lost from Weasley and the others. Why were you there? I just saw you, in Borgin and Burke's..."

"It's you." Reina said helplessly, "How do you think an orphan like me can get along in the aristocratic circle? I'm not the child of prophecy. Do you really think that those sycophants will consider the reputation of my long-deceased parents?"

"Harry, I am not you, and you will never be me. I don't know what kind of life you lead, and you naturally don't know my past, so some things don't need to be said out loud, and some questions don't need to be clarified."

"Secrets are weapons and friends."

Harry only half understood what she said, but he knew that Lena would not tell him.

"Okay, here we are, Diagon Alley, but you look like you need to tidy up." Reina took one look at Harry's dirty clothes and broken glasses and cast "Clean Up" and "Restore" on him.

"Oh, thank you." Harry saw the familiar milky white marble building - Gringotts.

"Reina, Harry! Here." Hermione was standing on the stairs of Gringotts and greeted them. She ran towards them quickly, her brown hair flying in the wind like a waterfall.

"Reina, long time no see!" Hermione hugged Reina with a smile.

"Oh, are you going to Gringotts, Harry?" Hermione looked at Harry aside.

"I have to find Sirius, the godfather mentioned in my letter, and Weasley and the others first," said Harry.

"Looks like they're coming—" Reina pointed ahead.

A large group of red-haired people squeezed through the crowded crowd, and the one in the front was the black-haired Sirius.

"Harry! Merlin's beard. You know how nervous I was when I heard from Arthur that you were missing! Where have you been?" Sirius hugged Harry directly over the two girls.

"Um, I just..." Harry looked at Rena, and Rena blinked at him.

"I don't know where I went, but I met Reina after walking for a while, and then I followed her." Harry summarized it directly.

"Reina?" Sirius then noticed the two girls next to him, "Oh, which one of you is Reina?"

"She is Reina, and my name is Hermione." Hermione pushed Reina out.

"Okay, Reina, Hermione, thank you so much, you are such beautiful girls." Sirius came closer to Harry and said, "Harry, you are so lucky to have two such confidantes."

"We're friends!" Harry corrected him.

"I know, I understand, I understand--" Sirius said teasingly.

Hermione blushed immediately, but Reyna smiled and said calmly, "It's nice to meet you, Mr. Black."

"What? Oh no, don't call me Black, call me Sirius or Sirius."

"Okay, Mr. Black." Lena kept smiling.

"Hey! I said--"

Sirius almost jumped up, and then Lupin came over: "Okay Padfoot, don't keep the Weasleys waiting."

Sirius then realized that there was a group of people waiting behind him, and immediately pulled Harry: "Okay, let's go get the money first!"

Mr. Weasley had already started chatting with Hermione's parents, Mr. and Mrs. Granger, in the hall of Gringotts. They had even made an appointment to go out for a drink. Sirius wanted to join them, but gave up when he thought of Harry's shopping.

"Reina, aren't you going with us?" Harry asked her when he saw that Reina had no intention of following.

"I have the money. You guys go ahead, I'll go buy something else first, and then we can meet at Flourish and Blotts. There are a lot of books to buy there, right? I guess you'll put that place last," said Lena.

"Are you sure you're alone, child?" asked Mrs. Weasley worriedly.

"It's okay ma'am, I'm often alone." Reina waved at them and walked to the other side.

"Oh, Merlin. Poor child, she's even used to being alone." Mrs. Weasley said pityingly, wiping her eyes.

"Okay, Molly, I think the child really enjoys being alone. She doesn't look like a Gryffindor at all. She's not passionate at all." Sirius interrupted.

"Of course she's not like a Gryffindor. She's a Slytherin after all," Harry explained. "Didn't I tell you that?"

"What!!! Slytherin??" Sirius shouted, and everyone in the hall looked over. Lupin had to remind him to speak more quietly.

"You said she is a Slytherin? Have I been locked up for too long and my mind is backward? Could it be that Gryffindor and Slytherin have actually reconciled now?"

"Hahaha, don't worry. At least you are not behind in this aspect. Reina is indeed a real Slytherin, but she is indeed not like those insidious and cunning ones." Arthur came over and patted Sirius on the shoulder, and whispered in his ear: "She even asked me to do Muggle business!"

"Amazing!" Sirius rolled his eyes and looked at Harry, "Harry, come on, I believe in you! It doesn't matter even if she is a Slytherin."

Harry rolled his eyes inwardly, indicating that he no longer wanted to pay attention to his godfather.