Even though he no longer has the abilities of a Servant, Kojiro can easily take on Level 1 and 2 Adventurers using only his skills.
Oryuu outclassing even someone endowed with level boost magic is a perfect illustration of the sheer power Servants possessed.
Who is the Radiance? Artoria Pendragon.
When Artoria and Kojiro reunite, they decide to reenact their first meeting. Due to having falna, Artoria is able to quickly knock down Kojiro, but not before he splits her helmet in half.
Bell stands up in the face of Nyx's aura of fear to save the goddess.
Artoria uses a powerful magic to wipe out the Demi-Spirit in one move.
In order to level up to Level 2, Kojiro decides to wait until an Infant Dragon shows up. He gets his wish, and it's an Enhanced Species to boot. To up the difficulty for himself even more, he doesn't use Tsubame Gaeshi.
Bell get his time to shine as an adventurer by going against a monster party of minotaurs that's being led by an Enhanced Species and is dominating against a group of adventurers. He decides to follow his heart, while ignoring Solaris and Lili, and rushes the lead minotaur.
He first fights it by deflecting its attacks, leading to the other minotaurs being destroyed by the Enhanced Species.
Bell is soon joined by the rest of his familia (plus Lili).
At first, the other adventurers start to run away. However, one by one, they stop to stare at Bell, a Level 1 adventurer, who's going up against the Enhanced Species when they themselves are running away. One of the adventurers (Mord) declares that they can't run away when a Level 1 is standing his ground, riling up all the adventurers before going back to fight the minotaurs.
The final battle between Bell and the Enhanced Species is uninterrupted thanks to Kojiro stopping the other adventurers from interfering after all the other minotaurs are defeated. Bell fights until his weapons break. Afterwards, he alternates between his two magics until he gets into position with his arm in the monsters mouth and uses Dragon Fang one last time to finally kill it.
As a result if this, Bell becomes the runner up to the Record Holder at one and a half months.
When Haruhime reunites with Bell, she reveals that in the time since they've last seen each other, she has leveled up to Level 2.
Hestia Familia is able to take down a Demi-Spirit (with some help from an item provided by Nyx).
With a powered up Firebolt, Bell is able to take down the fake Leviathan.
Penthesilea demonstrates her power by taking on the entire Hestia Familia and repelling all of their attacks, including a powered up Dragon Fang, before knocking them all out.
Arash shows that he's been holding back the entire time when he takes on Gugalanna and defeats it on his own without taking any significant damage whatsoever.
Bell, Lefiya, and Filvis are able to take down a Monster Rex that is classified as Level 5 in strength.
Hessian Lobo has enough strength to take on some of the best that Loki Familia and Hermes Familia have to offer.
In order to allow Lobo an opportunity to escape, Hessian resorts to blowing himself up.
After Hestia Familia trains for the War Game against Eris Familia, they get their statuses updated and find that all of them have stats at SS or SSS rank.
Right before the War Game begins, it's revealed that it's going to be held in an arena outside of Orario. The reason for this is because all of the friends Bell's made on his journey, as in some of the strongest adventurers in the world, wish to view it in person. As such, there are thrones for the incarnated Servants for all the people viewing the War Game to see.
In addition to that, the thrones have the emblems for the respective Servant's class, and the incarnated Servants themselves wear Black Cloaks that display the symbol of Chaldea, even Kojiro!
The first fight of the War Game has Solaris fight an opponent who is revealed to have a skill that grants immunity to flames. Solaris fights back using her brand new blue flames and busting out her new weapon, Grand Beast Devourer, Kira-Kusari!
When it looks like she's down for the count, Solaris ties her opponent up with Kira-Kusari and sets herself and her opponent on fire!
Haruhime was able to initially gain the upper hand against her opponent, and was only stopped from winning right away by her own kindness and hesitation.
When it looks like she's about to lose, she activates her new skill, undergoes Beastification, and defeats her opponent.
After Bell ends up on the losing end against his opponent, Diego, in the War Game, who's copying his style and using it against him, he decides to utilize the techniques of his Familia and friends to turn the tide.
When Diego uses his magic to try and take down Bell, Bell defends himself with his new shield magic.
In order to finally take down Diego, Bell utilizes all of his experiences and finally takes Diego down through a combination of an Argonaut boosted Dragon Fang and Firebolt.
Sasaki Kojiro, who went last on the War Game, fought a tricky opponent who perfectly countered and nearly defeated him. Kojiro seemingly gave up and decided to buy time for Bell to heal. But upon the encouragement given by Bell and his fellow Servants, Kojiro developed his own version of Musashi's Heaven Eyes called Prism Trance, which allowed Kojiro to see every possible outcome and choose the best one out of the possible ones
He also created a new secret technique: Tsubame Gaeshi: Tengai, which is similar to the Judgement Cut of Vergil from Devil May Cry.
Bell fights Asterios, with both fighters pulling out moves so impressive that everyone in attendance can only stare in awe.
Bell tells Romulus to his face that slavery is wrong, which impresses the latter, much to Bell's surprise.
“To claim my path is wrong means that you are confident in your own path. And all paths, if properly walked on, lead to Rome. My beloved ideal is not a monolith. Nay, I dare say that the conflict between different viewpoints is a vital component that makes Rome into what it is. I stand by my beliefs. You shall do the same. And one day, the world itself shall decide which one of us is right. Until then, sharpen the light in your soul. Strengthen it, and make it into a foundation of history itself. Until we meet again, young Cranel.”
Oryou and Penthesilea fully unleash their Noble Phantasms against Gojouno.
Kaguya gains new skills after talking with her dead sister and the first member of her clan to become a ghost. She uses said skills to help bring down Gojouno.
Though she's forced to use Avenger to do so, Aiz is able to partially block Jeanne Alter's Noble Phantasm.
The Night Queen's plans are thwarted thanks to Antonio Salieri fighting off her control and using his music free some of the others she has controlled. Her attempts to either get him to stop or kill himself all fail, much to her chagrin.
“I command you to stop, you damned musician! Shut it down! Be silent! Don’t you dare ruin my plans! Stop taking this away from me! Not after all this time!” …the music did not stop. Her command seals, created by herself, did not live up to the task, lacking refinement, experience and simply skill. “Go explode! Go die! Kill yourself! Kill yourself, damn it!”
Alfia demonstrates why she was the strongest of her era after the Mind Control she's under is broken.
Before Revis could even scream properly, Alfia slammed her palm against her mouth, silencing it. Despite her thin body, Alfia managed to force her fellow Creature on her knees, by just holding the wrist in a tight grip. It made no sense. Revis was a Creature for ages, feasting on magic stones to grow stronger and stronger, while this one hasn’t taken a single magic stone in her entire life, too busy being a lifeless puppet instead. Yet here Revis was being treated like a child. Revis’ eyes went wide, agonized and in fear, as she could feel the magical energy building up in the Silence, her eyes without mercy as they glowed and looked at Revis as if she were nothing more than garbage. That very same aura even froze the Violas as they were about to react to her, as if…as if these mindless things were actually afraid.
Finn surpasses his limits to defeat Fianna-Fenia, gaining her acknowledgement in the process.
Antonio Salieri gets some payback by playing Dies Irae, interrupting the Night Queen's control over all her thralls.
“You sinner that has cursed me and my fellow Avengers with your hatred! You who dared to trick us, taint us! Heed the sounds of your doom! Listen to the noise that shall tear your plans apart! This is our Hate! Ours and ours alone! Do not tarnish it with your own hatred, do not taint it with your inane projections!”
He continues to play his song even as his body breaks down due to the Night Queen commanding him to kill himself and is able to maintain his form until after he's finished playing.
Solaris surpasses her limits and defeats both a Juggernaut and Lobo on her own, albeit while sustaining massive injuries.
Right after Finn's wedding to Tione and Lyra, the Night Queen's forces attack Orario. To the adventurers' surprise, their enemies are Argonaut and his allies, with all of them, with the exception of Ariadne, is forced to fight their dopplegangers.
The Heroic Spirits demonstrate their power by matching, if not overpowering, the adventurers.
After Ariadne traps most of her allies and their respective opponents in her Noble Phantasm, her comrades each unleash theirs. The only reason they didn't do so earlier was because, without Ariadne's Noble Phantasm isolating them, the full might of their Noble Phantasms would've been enough destroyed Orario on their own.
The adventurers don't stay down even after being hit by Noble Phantasms, resulting in them handling themselves long enough for Alise to incapacitate Ariadne and disengage the latter's Noble Phantasm.
Bell fights evenly with Argonaut, and even starts copying the latter's technique in order to become even stronger.
Sidestories
Justice Lost reveals that Astrea Familia only survived against the Juggernaut due to Arash. While Starfall wasn't able to save the rest of the Familia, due to harrying the majority of Evilus while they were fighting the Juggernaut, the second he shows up he lays waste to it. Since his magic arrows are useless, he starts battering it with his bow, shattering its legs and shell, and ending the creature bare-handed. Alise admits she's never seen him fight so hard and never been so scared of him.
