HP: Let professors walk towards the light

"Drink this." Snape held out a bottle of sparkling potion.

"Soul Stabilizer! How do you have this?" Lena was a little surprised. She had only heard of one bottle in all this time.

"As a potion master, there's nothing I can't have." Snape laughed, uncorked the bottle and handed it to Lena.

"Has Regulus's matter been resolved? He seems to be very quiet recently, otherwise the elf would make trouble." Reina drank the potion in one gulp, then left the Shrieking Shack with Snape, glancing somewhere casually.

"Now that you've said that, isn't that enough?"

"I'm afraid so."

A minute later, Ron and the other two cautiously poked their heads out.

"Amazing! Did you hear the key information?" Ron exclaimed.

"It feels, as if, not that important." Hermione looked at Ron with a bit of disdain.

"Don't you think this kind of conversation is very similar to the underground transactions of dark wizards? I know that only dark wizards need soul stabilizers, don't they? Especially those unforgivable curses. And they also mentioned Dumbledore. By the way, is there anyone named Regulus?" Ron chattered.

"Soul Stabilizer, I seem to have heard this name somewhere, it sounds so familiar. I seem to have seen Regulus somewhere too." It was so familiar that Harry even wanted to flip through his memory page by page to look for it, but he couldn't do it.

?

"Why is the Christmas homework Inferi? We haven't even learned that yet."

At the Christmas Eve dinner, Hermione held this book, an encyclopedia about magical creatures.

"Oh Hermione, why are you reading on such a beautiful night before the holiday? Help, can't you just have a good meal and go home to celebrate the holidays?" Ron shook the chicken drumstick in his hand.

"No, please. We haven't learned about the Inferi at all. This assignment is difficult. I need to read more. Besides, there are too few records about the Inferi. It only says that they are lifeless, soulless and thoughtless corpses summoned by black magic. It doesn't even explain what black magic it is! This is too incomplete."

"Difficult? But Professor Lupin didn't specify the length of the assignment. He just told us to write it down after we understand it."

"I'm figuring it out." Hermione glanced at Ron and ignored him.

"Home... Ron!" Harry suddenly slammed the table, scaring Ron.

"Merlin! What are you doing Harry? I'm scared to death. Don't tell me you were infected by Hermione." Ron took a deep breath to calm his suddenly frightened heart.

"No, Ron, Hermione, I remember!"

"What?" Hermione closed the book and decided to eat properly.

"Regulus! I know where I've seen this name. It's the Regulus that Snape mentioned in his secret conversation with the witch that day." Harry was a little excited, but he still lowered his voice.

"Where?" Ron asked curiously.

"In my house, on the mural of Grimmauld Place, there is a Black family tree. I've seen it before. Sirius' name was burned off, but he has a younger brother named Regulus. Yes, Regulus Black. Sirius would never mention him. It was Lupin who told me that he was a Death Eater."

"Are you sure, Harry?" Hermione

"perhaps?"

-

"Look! Regulus Arcturus Black, that's the man I was talking about."

In the Black old house, Harry pointed to the family tree on the tapestry and the location of Sirius's brother Regulus.

"Could it be the same person?" Hermione didn't think the name was uncommon.

"Have you heard of it, Rena?" Hermione asked Rena.

"Of course I've heard that the Black family has two heirs. The eldest son ran away from home, and the second son died young. Other than that, the only other Blacks left are Bellatrix and Narcissa, as well as Andromeda who was removed from the family tree." Reina looked at the family tree and explained to the three people.

"Found it." Ron raised a finger.

"They were either Death Eaters or related to Death Eaters. Everything else was burned. Look." He pointed to the empty hole in the family tree.

"In that era, it was not unknown for pure-blood families to join the Death Eaters. So what happened to Regulus?" Rena asked Harry. After all, she didn't know what they were going to do at this "time". She was just a guest as agreed and was dragged along.

Harry glanced at Ron, who nudged Hermione with his elbow.

"Well...actually it was Harry. Harry overheard the conversation between Professor Lupin and Sirius." Hermione paused, then continued calmly.

"Lupin mentioned Regulus, but Sirius seemed impatient. I just suddenly remembered that I saw him here before." Harry added, but it was not completely false. Sirius was indeed annoyed when Lupin introduced Sirius's brother to him here before, just like he did with the painting in the corridor that often screamed, saying that the man was a stupid idiot.

"I see. Your godfather's impatience is consistent with his character." Reina nodded.

"But why did he die young? Logically speaking, after Sirius left, he should have been the only heir of Black." Hermione asked.

"Maybe he was killed by the Aurors. He was a Death Eater." Ron said. He thought that if he was a Death Eater who had done so many evil things, it would not be a pity for him to have such an end.

"No." Lupin's voice came from the door, and Harry and the others looked towards the door.

"Are you interested in him? Sirius's brother." He leaned against the door and smiled very gently.

"Yes, at least I hope to understand. At that time, Sirius..." Harry hesitated. He knew that Sirius did not like or even hate his pure-blood family, and his brother even became a Death Eater...

"Regulus was not killed by the Aurors, that's for sure. His body was not found within our range, so he could only have died at the hands of the You-Know-Who." Lupin looked downstairs and walked up to the few people after confirming that Sirius had not noticed this side.

"Is there any reason?" Hermione asked urgently.

"Regulus was a pure-blood, which was why he joined the Death Eaters. Even the old Black couple agreed with the You-Know-Who's point of view. But later they realized that the You-Know-Who was a man who would do anything to achieve his goals. They also felt fear and wanted to retreat. It was not long after that that there was no news of Regulus at all." Lupin touched Regulus' name on the tapestry and the black hole on the fork in front of him.

"He wanted to quit, so You-Know-Who got rid of him," Hermione concluded.

"Maybe that's the case. After all, the mysterious man will not allow someone to quit the team. In his opinion, such behavior is probably no different from being a traitor."