Elsewhere, a strange man slonks into the Realm through a portal. This man is none other than Unundutripent, the great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great nephew of Fibonacci himself. After entering the Realm, Unundutripent finds himself face to face with Nikku, who is at this moment going by the alias of Quadduunun. Unundutripent ignores Nikku entirely and begins monologuing to himself.
"It is time for me to reclaim the sacred Fibonacci family heirloom: the legendary Golden Rectangle! It's sealed deep within this tomb, but as a descendant of Fibonacci, I can enter and pass the many trials needed to reach it...starting with this door!" Unundutripent stares at the door to the tomb, which is actually the Stand of the tomb itself, Golden Rectangle. Unundutripent brings out his own Stand, Quick Death in Texas, and punches the door, which recognizes this Stand as belonging to a descendant of Fibonacci and opens as a result. Unundutripent takes one step into the tomb, and immediately a blade swings forwards and cuts him in half, causing his torso to topple forwards onto the ground. Unundutripent props himself up on one arm, and his Stand activates on its own, grabbing a nearby pile of rocks and molding it into a new set of legs, which it then attaches to Unundutripent's torso. Despite being made entirely of rocks, these legs work completely normally, and Unundutripent is able to stand back up without complication. Unundutripent suddenly notices someone else walk through the door that he left open, and turns around to see Jackery Jack Jak Jackson completely bypass the first obstacle. Unundutripent assumes this must be his next trial and rushes towards Jack, but Jack slides to the left, causing Unundutripent to trip and fall head first into the actual next obstacle, which is a blade that cuts Unundutripent in half down the middle all the way down to his stone legs. After a few seconds, Quick Death in Texas appears again and rips the blade out of the floor before mashing it into a new half body to replace the destroyed one. Once again, this body somehow works perfectly fine, even without any internal organs.
"Tell me, who are you?" Unundutripent demands, turning to look again at Jack.
"Heyyo, my name is Jackery Jack Jak Jackson, and I noticed the door was open so I walked in. I always walk in any door that's open!" responds Jack.
"Hmmm...sounds legitimate enough. Seems you know nothing of the treasure contained within this tomb.
"There's a treasure in this place?"
"Yes, the legendary Golden Rectangle. It is said to contain the most perfect form of the golden ratio in all of reality, and when harnessed properly it could be used for great feats."
"Does it look like a door?"
"It's probably shaped like one."
"Oh BOY!" Jack jumps excitedly and runs right past the second trial with no injuries, though Unundutripent knows that it's just because he "softened it up" for him. The next trial is a bunch of swinging balls, which both Jack and Unundutripent get through unscathed, though Unundutripent takes significantly longer to pass through. The next room has some kind of weird checkerboard pattern on the floor, and when Jack enters the room, a statue head, which is in fact another Stand of the tomb itself, known as Your Move, suddenly animates and begins speaking.
"In order to proceed, you must answer my riddles correctly to prove that you are worthy of the Fibonacci treasure. If you fail, dire consequences await you." bellows Your Move, hovering ominously. Jack ignores this and starts looking for rectangles on Your Move, while Your Move continues to speak. "State the first five nonzero numbers of the Fibonacci sequence." as Your Move says this, an ominous timer begins ticking down above Jack's head, but before anything can happen, Jack finds a small rectangle on the back of Your Move and opens it up before climbing into it, which causes Your Move to shut off and fall to the ground due to nobody being in the room. Inside, Jack finds a less weird checkerboard-like floor, as well as several palm trees. Jack opens up one of the checkerboard tiles and climbs in, which brings him directly to the final room of the tomb, where a man in a throne seems clearly surprised that somebody arrived there. This man is Unsexunoct, another descendant of Fibonacci tasked with being the final obstacle guarding the door to the chamber where the Golden Rectangle is stored. Unsexunoct clears his throat and takes a sip from his chalice, which is actually his Stand, Drink to the Dead.
"So, you must have come here seeking the Rectangle…" declares Unsexunoct, staring curiously at Jack.
"I heard it looks like a door, so I gotta enter it." Jack responds.
"There isn't a single door in this tomb except for the one at the entrance."
"Then how did I get here, huh?" Jack asks, and Unsexunoct points at the hole in the ceiling which leads to the previous trial. Jack points to the square in the floor that he entered from, and Unsexunoct shrugs.
"Anyways, if you have made it this far, you have proven yourself capable of dealing with numerous basic obstacles. However, you must pass the final obstacle before you can reach the Golden Rectangle. Here, take this ball of steel and throw it at the wall. If you are truly worthy of inheriting the Rectangle, the wall should fall away and you will be granted access to the chamber." Unsexunoct explains, before handing Jack an ordinary sphere of solid metal. Jack looks at the wall for rectangles first, and after finding one, he walks through it and ends up in the same room again. Jack repeats this several times before Unsexunoct finally stops him from going towards the wall again. "What the fresh fuck are you doing?"
"Entering doors." Jack says. Before Unsexunoct can respond, Unundutripent drops in from the hole in the ceiling, having finally gotten past the many trials that Jack skipped over.
"I AM HERE TO CLAIM THE RECTANGLE!" proclaims Unundutripent, standing up in front of Unsexunoct.
"Well, since this guy is currently in possession of the steel ball, the only other way to prove your worth is by drinking from my chalice. If you can survive ingesting whatever liquid Drink to the Dead produces when you hold it, then you will be able to go directly to the chamber." Unsexunoct explains. Jack seems to finally realize what he's supposed to do with the ball and throws it at the wall, causing it to bounce off and ricochet several times before landing in Unsexunoct's hand. The wall starts to crumble, but then stops, and a large rectangular symbol with an X through it appears, marking Jack's failure to prove his worth. Jack heads through one of the lines in the X and comes out through the other one just in time to see the top of Unundutripent's head exploding after taking a sip from Drink to the Dead. Unsexunoct begins walking towards the body to retrieve the chalice, but suddenly Quick Death in Texas appears and rips off Unsexunoct's arm, before forming it into a replacement for the part of Unundutripent's head that got blown off. Unsexunoct is slightly surprised by this, but not too perturbed, as a single sip from Drink to the Dead is enough to make his arm grow back. "It seems that neither one of you is worthy of entering the chamber." declares Unsexunoct, while Jack begins inspecting the chalice for rectangles. When Jack touches the chalice, a liquid appears inside of it which is somehow rectangular, and when Jack enters it, he emerges at the bottom of some kind of lake that he can breathe in for some reason. Jack sees a strange spiral pattern on the ground, which unbeknownst to him is in fact the Golden Rectangle of legend, which is not an object but a concept. Jack finds another rectangle floating near him and climbs through it, which takes him back out through the chalice. Unsexunoct seems to realize that Jack saw the Golden Rectangle, even if Jack doesn't realize it. "So, you saw it, that's an interesting way to complete the trial."
"What? All I saw was a bunch of spirals, I didn't see any Golden Rectangle." Jack responds.
"That WAS the Golden Rectangle, you fool!"
"Wait, it's a spiral? Then why is it called the Golden Rectangle? Shouldn't it be the Golden Spiral or something?" Unundutripent chimes in.
"No, it's called that because-wait, I'm not going to tell you! You didn't prove yourself worthy!"
"Well, that chalice was supposed to kill him if he wasn't worthy, right?" Jack notes, pointing out that Unundutripent is in fact still very alive. Unsexunoct suddenly notices that the pattern in which Unundutripent's body has been repairing itself is in fact consistent with the pattern of the golden ratio.
"Hm...I suppose you may actually be worthy, after all. It's called the Golden Rectangle because if you draw a rectangle surrounding the spiral, it will have the golden ratio, and you can repeat this process at every point where the spiral loops around forever. Knowing the form of the Golden Rectangle can grant you great power if used correctly. For example, if you could spin this steel ball in a way that perfectly follows the spiral, it would spin forever." Unsexunoct explains.
"So there's not even a rectangle for me to enter? This whole thing was a waste of my time! You got a door that can get me outta here quick?" Jack asks, and Unsexunoct presses a button on his throne, which teleports both Unundutripent and Jack out of the tomb.