3 days after Albert went on a date with Lucine
According to the official website for tips on Silver Feathers,
シルバーフェザーofficialtips.com, in order to find Nihil, you need to complete first 6 acts of the story, since that is when you can fast travel to Nocturne estate, as that is after Lucine is humiliated by the crown prince and banished. And there is a small patch of dirt standing out of the grass near the exit of the village inside the Nocturne Estate, by digging up that hole long enough, you will get Nihil. Albert doesn't regret cheating while playing the game, but he is technically not cheating since this is the world from the game. That is what he thought after waking up, lying in bed.
"Ok, time to get even more powerful." Albert said to himself as he got up, put on his clothes and gloves. He walked outside and knocked on Lucine's door. As soon as he did, he heard loud thumping footsteps, and then a loud thud on the door as Lucine opens it.
Lucine is half-dressed, she is still in the process of putting on her dress, Albert could see half her bare body, but she was just grinning. He just awkwardly closed the door and waited till she got dressed. A few minutes later, Lucine opened the door, now properly dressed as she gives him a good morning hug.
"Morning Albert! You're up early. Is there something special you want to do today!? Or maybe, do you want do it with me? It's far too early, we only became of age 2 months ago, but if you ask nicely-" Albert didn't want this conversation to get any weirder so he put his finger on her mouth.
"No, I just remembered, there was a dirt patch near the exit of the estate, I am thinking of digging it up, I just wanted to tell you that since I'm obviously going to be gone while doing that."
"But why would you be away from me? Are you going to dig it up with someone else, a GIRL!?" Lucine's hair was starting to rise like it did in the game when she's feeling angry, thankfully, Albert didn't sense any killing intent from her.
"No, I'm going to be with Kuroba, she's actually a good fighter, I would've brought Collene, but she is running an errand with Dahlis." Albert clarified, since there is no way that HE would cheat on Lucine. She is his fiancee, the best fiancee ever. Lucine nodded, bit his finger affectionately, and walked off downstairs to the dining hall.
30 minutes later, Albert and Kuroba arrived at the spot where the axe is supposed to be. The reason for as to why Albert picked Kuroba. Was simply because he couldn't risk his reputation. Although it was admittedly a cliche reason, even to him, he realized now that this was the main reason why nobles bring servants to excursions in dungeon quests. Kuroba at least seemed excited.
"Albert-sama, is this the spit where I am to dig for you? Is there treasure, some fucking gold!?" Kuroba was giggling. Albert realized it's been about 1 week since he told a joke, that's the longest he's been without joking since he came to this world!
"That's the spot, I have just this gut feeling that inside this hole is a treasure with a Kuro-bounty on it." Kuroba' face lit up with such a wide smile it seemed that it was past the limit of her jawline, before she bursted out in a cacophony of laughter, she was flailing in the ground. Albert concluded that he shouldn't use people's names in the joked he tells them, for their safety. After Kuroba finished laughing, she started to dig.
"Albert-sama, I found something in the ground!" Kuroba said, tossing her trowel aside as she showed me a large black bony stick sticking out if the ground, he saw this on countless walkthroughs, and in his own game. Albert eagerly pulled it out, and he finally has it, Nihil.
Nihil - An ancient axe forged from the spine of the black dragon king, with a blade made of oricalchum, it has the unique effect to allow the user to teleport up to 50 meters away, and it can create up to 5 illusionary copies of the wielder.
Albert was so happy, until he realized. He doesn't know how to fight with an axe, and Lucine only knows how to use magic. But he knows someone who might be willing to teach him.
"Kuroba, we're going back, Dahlis should be home in 3 hours." Kuroba jumped in joy as she saw the axe in his hand.
"Understood master!" She said.
When they returned to the mansion, Lucine was waiting for them, sipping some tea. She looked alarmed at the sight of the axe. But Albert calmly explained how they found it to her, and she smiled warmly. Albert was relieved Kuroba liked his axe, but then his gloves started to shake. Albert instinctively turned around since he couldn't clap, and there was Dahlis, wielding a long katana, he thankfully used his axe to counterattack, knocking Dahlis off guard and to the ground.
"Oh, so you have a weapon now. I guess you are going to ask me to train you?" Dahlis asked. Albert nodded.
---
1week later
Kuroba was sipping tea while watching Albert and Dahlis train, it was always entertaining to see them fight in the yard. Since 5 days ago, Albert has finally begun to fight with the axe like a normal knight. Kuroba is pleased, very pleased with her master's development. Though she does not harbor any romantic feelings for her master, she always found him entertaining. Even back when he was timid and submissive, he always did something entertaining at least weekly, but now this entertainment happens daily.
"Good, that axe is working like a sword Albert! Use that! Come on swing it harder. Don't you want to protect Lucine-sama?" Dahlis appears to be entertained as well. Everyone is just so entertaining. Kuroba also just likes watching people fight. It's a possible side effect of her unique skill Carnivore. Kuroba didn't pay any mind to it, Kuroba just wants Albert to be happy, Lucine to be happy, and as long as they are happy, she's happy too.