History Heartwarming / IsekaiQuartet

[[folder:'''Episode 19: Excitment! Physicals Day!''']]
* Overhearing from Subaru that he refuses to peek on the girls during their physicals, Julius briefly admires how much he has grown as a knight.
[[/folder]]

* Albedo's PetTheDog moment in instantly bonding with Rem over their belief in LoveAtFirstSight is oddly sweet (and hilarious), considering her [[FantasticRacism usual attitude toward humans]].

[[folder:'''Episode 20: Excitment! Physicals Day!''']]

* ... The next episode has Ainz and Tanya, the vilest beings in the Isekai multiverse, actually befriending one another. It goes to show that deep down, they haven't lost their humanity.

* When Albedo and Visha team up to block one of Destroyer's beams, Albedo states that Visha is pretty strong for a human.

[[folder:'''Episode 3: Deadlock! Classmates''']]
* The first of many friendships between two characters from two different series are Albedo and Rem. It's sweet that both exchange about their feelings for their love interests. Right after this episode...
[[/folder]]

* Filo has fun giving Mare and Subaru a ride around in her Filolial form, and when Raphtalia arrives, she transforms into her humanoid form and immediately runs to hug her. Kazuma is glad that Raphtalia has found one of her friends, and Aura comments on how cute Filo is.

* The fact that ''no one'' is mean to Filo, or treats her in any negative way, [[EvenEvilHasStandards including Narberal Gamma]], the same girl who hates anyone and everyone not originating from Nazarick and is one of the two most dangerous of the Pleadies. Not even she is disrespectful or mean to her, but rather treats her with respect. In fact, the only one who doesn't have a nice thing to say about her after is [[{{Tsundere}} Beatrice]].

* When Albedo and Visha team up to strong one of Destroyer's beams, Albedo states that Visha is pretty strong for a human.

[[folder:'''Episode 24: The Show Begins! Showtime'''']]

* When Albedo and Visha team up to strong one of Destroyer's beams, Albedo states that Visha is pretty strong for a human.

[[/folder]]

* Naofumi shows none of the wariness that defines much of his characterization in his home series and is completely comfortable with letting Filo roam around the school to ask other students for ideas for the play - in face, he actually ''encourages'' it, thinking this would be good for Filo. It certainly speaks volumes about how much he trusts the other students if he is willing to let Filo mingle with them, unlike the case with his home series.

* Naofumi shows none of the wariness that defines much of his characterization in his home series and is completely comfortable with letting Filo roam around the school to ask other students for ideas for the play. It certainly speaks volumes about how much he trusts the other students if he is willing to let Filo mingle with them, unlike the case with his home series.

* The fact that ''no one'' is mean to Filo, or treats her in any negative way, [[EvenEvilHasStandards including Narberal Gamma]], the same girl who hates anyone and everyone not originating from Nazarick and is one of the two most dangerous of the Pleadies. Not even she treats her in any negative way and treats her with respect. In fact, the only one who doesn't have a nice thing to say about her after is [[{{Tsundere}} Beatrice]].

* That [[OnlySaneMan Rerugen]] just goes with it shows how much he's relaxed.

* The fact that Ainz and Tanya make up by the end of the episode. It's heartwarming, seeing that both of them, who are not known to be apologetic over their actions, being able to show just a bit of humility and reconcile.

* To get Kazuma, Aqua, Grantz, Koenig, and Neumann out of detention, Mr. Rerugen explains to Subaru and Emilia that the five in question must perform a good deed, with Megumin having a plan to get them out. Emilia being genuinely delighted that there ''is'' a way to help out her classmates is shown to visibly move Rerugen, with him even remarking on how much of an angel she is.

** Though it may not seem so, Ram hints that even Mr. Roswaal is in on the plan as well.

* We also get to see Ram give Mr. Roswaal chocolate, complete with a genuine smile on her face.
* One can only imagine the look on Mr. Rerugen's face when ''Tanya'' offers him some chocolate!

* When the Destroyer returns to the school, Tanya immediately wants to go and stop it, with Kazuma, Ainz, and Subaru following suit alongside Naofumi, Julius, and Reinhard. However, Mr. Roswaal stops them because their plays are starting, and asks if there's no one else they can rely upon besides themselves. That's when the group realizes that their companions are willing to fight in their stead. It just goes to show how much trust they have in one another.
* Ainz throughout the episode is the most human he's been in a long while, being friendly competitive with Naofumi, Julius, Reinhard, bantering with Tanya, asking that people pay attention to his read face and not the horse hat and wondering why Tanya, Kazuma and Subaru sympathize with Naofumi but not him.

* The fact that ''no one'' is mean to Filo, or treats her in any negative way, [[EvenEvilHasStandards including Narberal Gamma]], the same girl who hates anyone and everyone not originating from Nazarick and is one of the two most dangerous of the Pleadies. Not even she treats her in any negative way, and treats her with respect. In fact, the only one who doesn't have a nice thing to say about her after is [[{{Tsundere}} Beatrice]].

* The fact that ''no one'' is mean to Filo, or treats her in any negative way. [[EvenEvilHasStandards Not even Narberal Gamma]], who hates everyone not of Nazarick and is constantly giving Lupusregina Beta the [[FacepalmOfDoom Iron Claw]], expresses any sort of negative feelings towards her and treats her with respect. In fact, the only one who doesn't have a nice thing to say about her after is [[{{Tsundere}} Beatrice]].

* To get Kazuma, Aqua, Grantz, Koenig, and Neumann out of detention, Mr. Rerugen explains to Subaru and Emilia that the five in question must perform a good deed, with Megumin having a plan to get them out. Later in science class, everyone in the class minus Tanya is in on their plan, with Visha and Weiss both helping Megumin put it into action[[note]]Her plan is to set off a contained explosion and blow up a bunsen burner, which ends up also triggering a flood[[/note]].

* The fact that ''no one'' is mean to Filo, or treats her in any negative way. Not even Narberal Gamma, who hates everyone not of Nazarick and is constantly giving Lupusregina Beta the [[FacepalmOfDoom Iron Claw]], expresses any sort of negative feelings towards her and treats her with respect. In fact, the only one who doesn't have a nice thing to say about her after is [[{{Tsundere}} Beatrice]].

* Naofumi laughs and smiles '''''a lot''''' in this series, not having the stress of the Waves or being around the [[IdiotHero Idiot Trio]], while at the same time being with his TrueCompanions seems to have taken a huge weight off his shoulders. This is likely the closest Shield Hero fans will get to see of him as he was before his story began.

* After going to Kazuma and Tanya to get advice about the story and getting no where Visha gives Filo a treat and asks her if it's good.
* Emilia is probably the nicest to Filo of anyone, treating her more like an actual child than anybody so far, she watches her words, speaks at a level Filo is sure to understand, listens and when Filo lowers her head worried Emilia leans down to keep eye-contact with Filo while giving her advice and waves good-bye. Seriously Emilia is a good girl.
* Though whether what did is considered helping, it's sweet that the Pleiades that were present in this scene were willing to help Filo find a story to do a play on.
* ''No one'' is mean to Filo, even Narberal Gamma, who hates everyone not of Nazarick and is constantly giving Lupusregina Beta the [[FacepalmOfDoom Iron Claw]] is generally nice to her. In fact the only one who doesn't have a nice thing to say about her after is the resident {{Tsundere}} Beatrice.
* Naofumi laughs '''''a lot''''' in this series, not having the stress of the waves or being around the [[IdiotHero Idiot Trio]], while at the same time being with his TrueCompanions seems to have taken a huge weight off his shoulders. This is likely the closest Shield Hero fans will get to see of him as he was before his story began.

** After going to Kazuma and Tanya to get advice about the story and getting no where Visha gives Filo a treat and asks her if it's good.

* When the class breaks up into Salt and Pepper, Ketchup, and Mayonnaise, Cocytus is the only one to pick something different from the Overlord gang, who all side with Ainz and ketchup. When the camera focuses on him, he is reminding himself that he is still loyal under his breath, while Ainz just accepts it.

* Though whether what did is considered helping, it's sweet that the Pleadies that were present in this scene were willing to help Filo find a story to do a play on.