The Ralts, later known as Whisper, hatching earlier than expected because she could feel Weiss's emotional turmoil and wanted to help her.
It should be noted that Ralts got the idea to do this after sensing Ruby cheering Nox up when the latter was feeling that he was too weak to properly help the team.
When Weiss kicks the keisters of the Team Rocket members trying to steal the eggs, Whisper is awestruck and develops a case of Big Sister Worship towards Weiss, wanting to be just like her, sword and all.
Yang using her Aura to warm up a soaked Torchic, who had just had enough of Damien's treatment and run-off. Whisper translates his chirps:
Torchic: Hello my name is Torchic and I already love you.
Gary's Alakazam quickly bonds to Whisper as a student, giving in to her demand to teach her Psycho Cut (so that she can be more like Weiss).
Karen reassuring Blake that the Elite Four doesn't care about her past.
Weiss comforting Whisper, who is feeling guilty about accidentally teleporting Tyrian during the battle.
Nox actually forces himself to keep evolving right past Golbat and into Crobat to save Ruby's life, which is also an awesome moment.
Remember, Golbat evolves into Crobat when its friendship value is maximized. Ruby's so nice that she did it in just a couple of weeks.
Gastly using his illusions to show Blake an image of her parents.
Absol being readily accepted by the student body of Beacon. Coco even loans her a shawl so she can be dressed up for the dance too.
Zwei bringing a daisy for Absol is incredibly adorable.
Taiyang, seeing Pyrrha's obvious attraction for Jaune, tells the latter to just ask the girl out. Seeing Pyrrha's reaction to it is what clues Jaune in on her feelings for him - and his feelings for his partner.
Nora and Ren are happy to see their teammates finally getting together.
When Jaune sees Pyrrha wearing a dress, he's so dumbstruck that he can barely say "Wow."
Absol keeps Cardin from harassing Jaune and Pyrrha by setting a punch bowl on the former. The fact that Jaune instinctively protects Pyrrha from the punch by hugging her out of the way is a bonus.
Nox and Ruby's "compliment showdown". Especially since Ruby has bonded enough with the former that she can get the gist of what he’s saying despite not understanding Pokémon speech. Rowlet even notes how obvious it is that they belong together.
When Lillie wants to join in on Casey's training, the girls are understanding, and after making sure that she understands what she's asking for, have no problem with her joining in.
The unlocking of Casey and Lillie's auras is a thing of beauty. Yang and Weiss both have invocations that speak to who they are as people, and the entire thing is backed by Sogno Di Volare(The Dream of Flight) to emphasize the majesty and beauty that is the power of the soul. Riley's Lucario gets a direct look at it via aura sight, and can barely put it into words.
...I don’t know if I have the words for it… but the closest I can come is that it was like seeing a bonfire reach out to light a smoldering candle. That doesn’t do it justice at all, but… it was amazing.
Ren actually manages a small smile at Absol's happy reaction to the fact that the book that he lent to her is the first in a series.
Yang is actually quite impressed by how well Casey and Lillie are doing with their Huntress training, not that she'll compromise her Drill Sergeant Nasty persona by telling them that.
The team watches the news and are stunned by seeing everyone they saved thanking them.
When a baby Kangaskhan falls into the volcano during Yang's Totem battle, Yang immediately dives in and rescues her. Afterward, the Totem Salazzle gives her a Z-Crystal as thanks, and the mother gives her a giant hug.
Weiss meeting her grandpa thanks to Tapu Fini, and their conversation.
At the end of the chapter Ruby and Yang get to meet Summer again. In another related heartwarming moment, this happened because Weiss requested it of Tapu Fini.
Qrow has been stressed due to missing his nieces and constantly failing to reach the portals. When Absol shows him Winter cooing over Zwei, he laughs, then thanks her and says he needed that.
Ruby reassuring Lillie, who is panicking at her first time seeing Grimm in the field.
Once things have settled, Gladion recounts how he helped Type: Null deal with his helmet until he could control his powers. The mental image is surprisingly adorable.
When Nebby is taken, Team RWBY and company immediately storm Team Skull's compound to get him back.
Guzma opting not to use the "perfectly safe" drug provided by Faba on his Golisopod out of concern for his partner's well-being. On a similar note, Golisopod choosing to take the drug anyway because he's more concerned about Guzma's safety than the possible negative side effects it might have on himself.
When Nebby evolves into Solgaleo, despite his fearsome appearance, he nuzzles Lillie and thanks her for protecting him for so long, but now it is time for him to protect her.
Lusamine seeing Gladion and hugging him and Lillie tight, glad to have both of her children back again.
Thanks to Solgaleo, Devon Corp., Aether Foundation, and Professor Burnet, they manage to make a stable portal and Team RWBY is finally reunited with their friends and families. They arrange for diplomatic relations between Earth and Remnant, and Lance and Professor Oak meet and shake hands with Ozpin.
Thanks to RWBY returning home, Absol is able to communicate to Qrow that she considers him her trainer.
When Jacques makes Winter relay a message from him to Weiss, Winter proceeds to warn Weiss to take precautions in case she offends Jacques enough that he cuts her off.
Don't make my mistakes.
Ruby, Weiss, and Yang put together a plan to bring Blake to meet her parents.
Yang and Ruby get along well with Kali and Ghira, sharing stories about Blake.
The first thing Ghira and Kali do when they meet their child? They give her a Bear Hug.
Yang and Ruby had been quite obtuse on the identity of their fourth teammate, knowing the general hatred Faunus have for the Schnee corporation. When Kali meets Weiss, and confirms she was the one that came up with the plan... she gives her a hug and thanks her for helping meet their daughter again.
The meeting between Huntsmen and Pokémon trainers goes very well, with everyone having fun and becoming friends with each other. Even Professor Port becomes friends with Professor Cypress!
to emphasize the majesty and beauty that is the power of the soul. Riley's Lucario gets a direct look at it via aura sight, and can barely put it into words....I don’t know if I have the words for it… but the closest I can come is that it was like seeing a bonfire reach out to light a smoldering candle. That doesn’t do it justice at all, but… it was amazing.