As a Moments subpage, all spoilers are unmarked as per policy. You Have Been Warned.
- George's death is particularly saddening, considering before he dies he tells Kai to take care of Saya and Riku and tells Saya never to forget to smile. Later on Riku is killed by Diva, causing Saya to become a emotionally distant Death Seeker hellbent on revenge and estranged from her allies.
- Everything about Mui. The last we see of her, she has been irreversibly turned into a seemingly-mindless chiropteran mutant. She taps the bottom of her cage as if playing the piano, a lost, sad look in her eyes...
- The deaths of all the Schiff except Lulu. At least, Lulu was cured of the "Thorn" but she's the last of the Schiff.
- When Saya realizes that Riku has been raped and crystallized by Diva—it only gets worse when he starts to crumble away and a fallen shipping container smashes his body to bits.
- Then there's Kai's reaction to Riku's death, Kai was forced to witness Diva's horrific murder of Riku without being able to stop her. Riku wasn't only Kai's brother but his best friend, Kai's utter look of despair and sobs of anguish as he reaches out to Riku's lifeless corpse are utterly haunting. We witnessed 32 episodes of Kai and Riku's brotherly bond only for it to end like this.
- Diva approaching a terrified Riku is both Nightmare Fuel and utterly depressing as you can see the utter terror on the poor boy's face. Riku's last words are "I've got to protect my brother", to the very end Riku was a Nice Guy who always thought of others even if his own life was at risk. It's a case of Too Good for This Sinful Earth dying in the worst possible way.
- The only thing more heartwrenching than Karl's death is his life. It's clear that Solomon is internally torn apart by killing his brother and even talks about Karl fondly after the fact.
- Solomon getting poisoned by Saya's blood when he helps her kill James. He tells her to call for him when she needs him, then takes his leave with a smile. As he's dying in an alleyway, Amshel confronts him. Solomon fails to kill him and instead dies in his arms.
- Saya and Diva's attempts at convincing each other of their point-of-view before their fight to the death. They're both obviously regretting that they have to kill one another, but they still feel that they have to, for their own reasons.
- Diva crying out to Saya as she is crystallizing and her last thoughts of the time she'll never get to spend with her babies. Saya breaking down and screaming in anguish really didn't help matters, nor her holding Diva's crystallized hand, or Nathan's monologue. Meanwhile, in the manga the sisters are on the verge of reconciliation and Diva's last actions are to stop Saya from killing herself to join her and to tell her beloved sister to live. Tragic in both cases is that Saya wants to die together with Diva, having planned on it for centuries. It is only once Diva is dying that Saya reveals how much she still cares about her twin, who is visibly surprised.
- Hagi's Heroic Sacrifice: he smilingly tells Saya he loves her right before the ceiling caves in on him. Poor girl. Luckily, it's later implied that he survives and is waiting for her to wake up from her hibernation.
- As a chiropteran, Saya has a much longer lifespan, meaning that she will still be alive long after all the human characters, including her adoptive elder brother Kai, are dead. At least she'll still have Haji and her nieces.
- The third ending theme showing a young Saya and Diva running together and having fun in modern day.
