General POV
(A.N : I'll apologize beforehand if Hagrid's accent that I'm about to write is just terrible, sorry)
"I'm the on'l man for the job, Keeper of Keys and Grounds!" Hagrid whistled merrily, opening the door out of his huge hut, grabbing a watering can and filling it up with water, "Aguamenti," Hagrid pointed his wand and a stream of water flew out of it. Hagrid may have his wand snappped in the 50s but that ain't stopping Dumbledore in getting him a new wand, oftenly disguised as a pink umbrella, you can't be too cautious at anything.
Hagrid went down a slope in his big form and started to drizzle water allover his pumpkin garden full of large, ripe, juicy pumpkins ready for the taking, and certainly ready for Halloween. Whistling his way through the garden he spotted tiny bowtruckles on a pumpkin vine, "Hey'r lit'l kiddo," (A.N : Once again, I'm so sorry) Hagrid warmly said patting on the bowtruckle's leaf head, the bowtruckle simply growled pleasantly and continued rubbing its head towards Hagrid's hand. Warmth filled Hagrid's body and soul, "T'day's gon'a be a gu'd day."
"Ah! It's ter time to see my gu'd frie'n Aragog," Hagrid looked up the sun gazing at it softly before going back into his hut, a small round table could be seen with a seat, a spacious couch, a warm grizzling fireplace, and numerous jars on top of cabinets. Hagrid pulled open a cabinet and took out a hearty piece of meat, wrapping it up on some foil before placing it up on his shoulder.
Hagrid went out of his hut, and onwards towards the Forbidden Forest, Hagrid as the Keeper of Keys and Grounds has completely memorized every single route, location and designation of the entire grounds in the area around Hogwarts, in his 20 years of work as a Grounds Keeper, he has entered the Forbidden Forest countless times, to chat with Aragog, dabbling with nature, and discovering the beautiful creatures in the forest, this has been a routine activity for Hagrid since the 1970s. (The wiki says that Hagrid started working since 1884 or EARLIER, in this case, he started working earlier.)
Hagrid finally made his way in front of the main Acromantula Colony, "Aragog, my frie'n!" Hagrid shouted to the trees, expecting a reply like he always does, but a few minutes passed and there's still no sound, "My frie'n Aragog!" Hagrid shouted again, this time getting a response albeit an unexpected one. "Who's shouting," a male voice came out of the trees and his body was soon made out, a slender athletic top, and a rather animalistic bottom, a centaur appeared.
"Why are ter centaurs in Aragog's home?" Hagrid asked towards the centaur, the centaur stared at Hagrid hard as if trying to remember something, "Ah! I know you, you're the half-giant friend of Firenze aren't you." Hagrid nodded in which the centaur looked quite difficult to continue, "Well... You're friends with Aragog, and I'm sincerely sorry in saying that he's dead,"
Hagrid's already big eyes and big brows expanded significantly, his brows reaching the top of his temple, and eyes bulging wide like eggs trying to pop open. "Aragog! What happened ter him!" Hagrid agitatedly gripped the centaurs hand and shook the centaur left and right. "Calm down!" the centaurs stated and looked at Hagrid's eyes, tears have started to form, glistening his eyes and threatening to fall, the centaur sighed helplessly.
"We finally raided the main Acromantula Colony with the help of a human, Aragog is starting to kill a lot of centaurs when the human finally used his magic to cut a hole deep through Aragog, killing him," the centaur explained. At this moment, Hagrid really looked sad, he's sobbing quietly, tears falling out of his sad eyes, he just lost someone so dear to him, it felt like his heart is cut to pieces.
"Who's th's human!" Hagrid ragingly and sorrowfully asked. The centaur wondered for a bit, "Magorian said something like an Avter, is it Crynn Avter, I think that's his name," Hagrid immediately turned around running from the spot back towards his hut, tearing still falling from his dejected eyes, having lost a friend that has been with you for as long as you can remember, his heart filled with certain rage, not towards the centaurs as he had known that one day or another, the centaurs would eradicate the Acromantula. But towards the human who have (In his mind) rallied the centaurs aand killed one of his only friends.
He just ran towards his hut, opening the door forcefully, putting down the hearty meat back towards the cabinet and exited the hut with a loud shut of the door, birds could be seen flying away in shock at the sheer power in which the door was closed shut. Hagrid glumly walked towards Hogwarts,
Opening the grand doors, Hagrid walked inside full of force and a sadness that seems to radiate from him, he walked towards the Transfiguration Class, precisely located in the first floor, he saw numerous students walking out of the class, he's just in time to see Minerva packing up and started to exit the class, "Minerva!" Hagrid shouted. "Goodness Hagrid! What in Merlin's Beard happened to you!" Mcgonagall surprised at the sudden shout turned around and was further shocked at seeing the condition Hagrid's in, sad drooping eyes, tearmarks splattered allover his face.
"I wanted to see Professor Dumbledore, Minerva," Mcgonagall just nodded and led him by his hand to see the headmaster, not bothering to ask any questions anymore, the sorrow radiating from Hagrid seems to shut her, it's wise not to ask at this time. Mcgonagall walked up to the eagle-like statue and said the password, "Jelly Bean," the password is frequently changed and the professors has to take notice of the change or they'll sit around guessing candies in front of the statue.
Walking up the statue, Mcgonagall opened a door leading poor Hagrid into the office, seeing the Headmaster and Professor Snape talking to each other, "Ah Minerva! We're just talking about Harry!" Dumbledore said merrily before gazing at the other that entered his office, "Merlin's Beard, what happened Hagrid," Dumbledore is shocked at seeing Hagrid much like how Mcgonagall is shocked, Snape seems surprised but kept his emotions at bay, Slytherins never show your emotions towards anyone when not necessary.
"Sorry Professor, it's just a lot to take in," Hagrid quietly sobbed and Mcgonagall brought him to a chair facing the headmaster, "It's ok Hagrid take your time," Dumbledore said warmly and wrriedly, what had happened to Hagrid to make him look so grief-stricken.
After a few minutes of sobbing and calming down, Hagrid starts to explain what happened, "Aragog was killed, the Acromantula was wiped out," Immediately the Headmaster sat straight seriousness shown in his face, the two professors in the sidelines were shocked at what happened, the Acromantula wiped out, this is quite the news.
"And?" Snape carefully asked Hagrid, sneering but not hiding the curiosity displayed in his eyes. "A human killed Aragog," Hagrid wailed. "What!" this time, Snape can't hide his shock, "You can't just kill the Acromantula leader, it's suicide!" Snape bellowed harshly at the poor man. "Severus! Can't you see the situation!" Mcgonagall sternly reminded Snape, Snape backed down and sat, fingers tapping the chair's armrest.
"Ter centaurs say, they attack'd the Main Colony with ter help of a human, and when Aragog start'd killin' ter centaurs, ter human unleash'd his magic and kill'd Aragog!" Hagrid sobbingly explained, "How do you know it's a he?" Mcgonagall asked, Snape and Dumbledore perked up expecting a reply in which they can identify who the human is.
"The centaur said that Magorian knew his name, something of Avter, Crynn Avter!", this time nothing could stop the shock for the professors. "What!" Snape and Mcgonagall, hysterically bellowed even Dumbledore could not hide that his normal composure at anything were blown away to dust, the shock is plastered onto Dumbledore's face.
"Are you sure, Hagrid?" Dumbledore looked at Hagrid, "Ye Professor, ter centaur said ter name with a respe'c unhea'd of for any centaurs! He said clearly Crynn Avter!" The professors continued hysterically shouting out. Dumbledore just moments ago chatting cheerfully about Harry with Severus is know back being stressed, "Silence!" One forceful scream and the office is once again silent. Dumbledore sighed, rubbing his temple, "Thanks for the news Hagrid, I'm sorry for your loss," Hagrid sobbingly nodded and exited the office.
"This is a massive security breach in Hogwarts Albus, you must to something!" Mcgonagall looked at Dumbledore hoping for an answer, "A potential dark wizard is in the area, we must act quickly!" Snape yelled out, with unhidden vengeance and bloodlust in his voice, he can't forget his humiliation sufffered on him by that wizard!
"I believe you two have work to do," without a second to react, Dumbledore did not give time for them to complain and directly wandlessly threw the two professors out of his office and in front of the statue, the passage is sealed shut, no one can disturb Dumbledore now. Sighing, Dumbledore pulled out his pensieve, putting memory by memory in trying to fin any memory on who this Crynn Avter is.
"I can't believe I can't find you in my memory," Until the end of the day, Dumbledore still can't find him.