Several of the endings in 3, especially since each character's individual ending is only a piece of the big picture that's formed with everyone's endings combined together.
Saki's would've been an utter Tear Jerker when she broke down in tears after seeing Fiona off after her attempts to restore her into a human were a complete failure and lie... had it not been for Heart coming shortly after and comforting her, despite Saki trying to push her away, which pulls it to this trope.
Lieselotte's and Zenia's definitely qualify, with the two finally being able to reunite as sister.
Akane's has her starting out as depressed that Nazuna is leaving her to move in with Kamui and planning to let it go, when Kamui simply asks her if that's what she really wants. Cue Akane also moving in and, in Kamui's ending, it shows all of Kamui, Konoha, Nazuna and Akane sleeping together.
Angelia's ending has Mildred decide to celebrate her older sister's birthday for the first time in seven years, since she's never been able to do it since Angelia ascended to the Arcana World. She even crafts Angelia a flower crown with Fiona.
Konoha's has her sewing plushies of herself and Kamui (and poking herself countless times) to give as gifts to Kamui.
Lilica witnesses the Heart and Saki moment from Saki's ending in her own ending and, feeling guilty that she was just messing around while Saki was working so hard for Fiona's sake, she decides to recruit Yoriko and browbeat her father into helping find a way to bring Fiona back.
Maori's ending shows just how much her little sisters love and look up to her, calling her the "bestest in Japan."
Mei-Fang's has Mei Ling acknowledging her as her daughter rather than just as a creation.
Clarice's Memories story has the demon nun crafting a love potion to give to Elsa, believing her friend was too distant from her. However, as the story progresses, she begins to have doubts about if she's doing the right thing, eventually deciding to take it herself and prevent Elsa from using it, at which point Clarice ends up collapsing to the floor. As it turns out, the love potion works by making the recipient ill, which will lead someone to take care of them while sick. That act of kindness brings out the love in someone's heart, after which they'll be cured of their illness. This leads to a cute scene in which Elsa ends up nursing the sick Clarice, feeding her pastries while Clarice chastises herself for trying to give Elsa the potion. While the ending provides a bit of Mood Whiplash when Elsa gets angry after Clarice is cured, believing she faked the illness, it does confirm that the two nuns love and care for each other.
