Here is a list of tropes sorted under Kotori Ayami, also known as Valkyrie Brunhilde.
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Kotori Ayami/Valkyrie Brunhilde
Voiced by: Erika Fong (initial), Erica Mendez (current)
Leader of the destined Valkyrie Maidens and reincarnated from Brunhilde. Her childhood is quite crazy.
As a child, Kotori has dealt with abuse from her mother after her father died in a line of police duty. At school, Kotori is feared by bullies as she takes no hesitation in beating them up. However, one bully named Hamada pushes her down the stairs that led to a coma and died later. In the Underworld Saga, she forms a friendship with Seadramon (formerly the Dark Master MetalSeadramon) and gets acquainted with Himura and Inumon to fight Basilikmon. However, Basilikmon kills Kotori yet again.
In Wrath of Pharaohmon (Season 1), her spirit appears in Himura's dreams to guide him, while in Season 2 (Invasion of the Rajita) she is temporary brought back to life to become her Valkyrie form in facing the Rajita before returning to the afterlife. At one point, she is forced to fight Seadramon controlled by the Orichalcos, but Kotori eventually saves him.
In Season 3 (Dawn of Chaos), Necromon brought her back to life as one of his unstoppable zombie minions, but later on, her friends save her and finally officially brought her back to life. After the final battles, Kotori decides to start over her civilian life to become a police officer.
In Valkyrie Advent, she and Himura are now working in the Tokyo Metropolitan Police Department. Kotori receives visions of the other Valkyries, to which she meets Sasha D'Anjou as the awakened Norn and the yet to be awakened Skuld. Thus, after learning information of the maidens, Kotori leads three groups to find her teammates: Sigrun, Gondul, and Skogul, while facing four Drakes. Upon returning to Japan, Kotori and her allies attempt to protect Sasha, while having her first encounter with her arch-enemy, Mist. Mist is about to strike her down, but Philippe sacrifices himself to save his cousin, making Brunhilde enraged and Skuld is awakened by making the portal to Niflheim. With preparations, Brunhilde and her group venture to Niflheim and the Nine Realms to find Philippe's soul.
- Abusive Parents: Her mother was one since Kotori's father died from duty.
- Action Girl: She is the young girl that always springs to action.
- Ambiguously Bi: Played with. In Gaiden, Policeman's Ball, Kotori blushes of seeing Jeri's dress.
- And Then John Was a Zombie: In Season 3, Necromon revives her as his undead warrior. In Chapter 53, Kotori is restored and fully brought to life.
- Arch-Enemy: To Mist (YYGDM-01).
- Ascended Fangirl: She is what way, a composite/amalgamation of the four anime franchises that crossovered to YYGDM alongside Dragonball to one in-universe fan, being based off the stereotype of most fanfic writers are girls. In chronological order of YYGDM stories in the Underworld Saga, Kotori is the first character to appear in seen as a perspective character.
- She is a Tamer who owns a Digimon, which happens to be a former Dark Master. She also has a crossover love interest going by Kouichi.
- Like the Sailor Senshi, she is someone who had a similar ancestry as a Valkyrie Maiden and being reawakened in the modern era.
- While she doesn't collect the cards, she admires Guardian Eatos that Himura and Yui used.
- She has connections to spiritual underworlds, and being the bully hunter like Yusuke and Kuwabara.
- She interacts with fanfic characters similar to the Dragon Ball Z much like a fan wishing to meet these fictional characters, hence the Ascendants and D3s.
- The Baby of the Bunch: Just like Takato, Kotori is this since post-Dawn of Chaos in being a rookie to catch up as a hero.
- Betty and Veronica: The Veronica to Jeri's Betty. Himura is like the Archie.
- Brainwashed and Crazy: She was under controlled by Necromon as a zombie in Season 3, but she is freed at the end of Ch. 53.
- Bully Hunter: Has this role to beat up bullies and save weak people like Phillipe back then.
- Challenge Seeker: She really loves to fight strong opponents. One main example is that in D-Reaper's Fury, she desires to fight Omega X since he's the strongest Ascendant. In Battle Supremacy, due to being missed out of the past tournament of D-Reaper's Fury, she desires to compete that tournament in facing opponents of Digiverse 6.
- Combat Pragmatist: She evolves her fighting skills to learn closely when facing strong opponents.
- Cops and Detectives: She has become a police officer post-DoC/Apophis Trilogy.
- Dark and Troubled Past: When she was young, her father died in an accident, having her mother became drunk and beat her in a daily basis. Kotori toughened herself up by fighting bullies at school, but one of the bullies named Hamada pushed her down the stairs and leading her to a coma. Thus, in the Underworld Saga, she met Himura and Seadramon while facing Basiliskmon. Sadly, she is killed, and that's just before YYGDM Season 1 began.
- David Versus Goliath: Ch. 1 of Valkyrie Advent shows Kotori arm-wrestles with the larger Daigo. Guess who wins?Daigo: This ox is about to crush this little bird under his hoof!Kotori: Or, this little bird...(she slams his hand down)...flips you right on your ass!
- Deadpan Snarker: Loves to give snarky comments.
- Death by Origin Story: By Basiliskmon nonetheless in the Underworld Saga.
- Determinator: No matter the odds, the Valkyrie never gives up in her resolve.
- Domestic Abuse: Again, it's sad as a child enduring this at home while at the same time watches Digimon Adventure.
- Expy: Being a Tamer/Digi-Destined, she is like a female version of Takato with elements of Rika, but also a similar mindset of Taichi.
- In recent years, her personality and actions are similar to Ryuko Matoi.
- Fusion Dance: She can fuse with MetalSeadramon to become Mizuchi Mode.
- Good Counterpart: To Mist.
- Hot-Blooded: Has this trait in the heat of battle.
- It's Personal: After Philippe is killed at the end of Valkyrie Advent Ch. 6, she becomes this towards Mist while willing to find her cousin's soul back.
- Japanese Delinquent: Her mannerism is like this, for a girl who becomes a police officer.
- Official Couple: With Koichi Kimura.
- Original Character: She's a Digimon Tamers fan character created by Belletiger.
- Playing with Fire / An Ice Person: She wields blue flames and ice powers.
- Posthumous Character: She was this at the start of YYGDM. It was when she was brought back to life late in Dawn of Chaos that subverts this.
- Reincarnation: Of Brunhilde, the leader of the Valkyries.
- Red Oni, Blue Oni: The red to Rika's blue. Kotori is fiery and passionate, while Rika is cool and collected. In a nutshell, both are meant to be the best of friends and are close to Takato.
- Sixth Ranger: Post-revival, she is this to the Tamers.
- Super Mode: By using the Moon Force Crystal in Valkyrie Advent's climax, she becomes the Silver Valkyrie.
- Tomboy and Girly Girl: The Tomboy to Jeri's Girly Girl.
- Took a Level in Badass: She started off as just a Tamer commanding her Digimon, yet can tame a former Dark Master. When she was killed before Season 1 began, she was temporary brought back to life in Season 2 in wielding Valkyrie powers, but not genuinely. After properly brought back to life in Ch. 53 of Season 3, her awakening as Brunhilde is fully complete, allowing her to train her powers to her potential. Her training to eventually lead her team allows her to gain new forms: Mizuchi Mode, Dai-Valkyrie, and the Silver Valkyrie.
Kotori's Digimon partner, and also the former Dark Master MetalSeadramon. Blinded himself in rage after Kotori's death, which also served to protect him from Basilikmon's petrification powers.
- Adaptational Heroism: MetalSeadramon becomes a good guy thanks to Kotori sparing his soul's fate in the Underworld Saga. Since then, he is fiercely loyal to his Tamer and fighting for good.
- Fusion Dance: In Valkyrie Advent onward, he can fuse with Brunhilde to become Mizuchi Mode.
- One-Winged Angel: After absorbing Leviamon's data later in Dawn of Chaos, Seadramon can digivolve to his appearance.
