- Awesome Mc Coolname: "Tatsuhiko Shido" (purple-wysteria dragon-son) is merely the character's current alias, and too over the top for Guni to hold back from snarking about it.
- Badass Longcoat
- Bloody Murder: Shido can use his blood as a weapon. In particular, he can change it into a sword.
- Brainwashed: In the past by Cain.
- Even the Guys Want Him: Cain does.
- Friendly Neighborhood Vampire
- May-December Romance: With Riho.
- No Name Given: Shido's name is just an alias. While this is great for the mystique factor, there's also the justification that he suffers from Identity Amnesia.
- Romantic Vampire Boy
- You Gotta Have Lavender Hair
- Clingy Jealous Girl: Rather mild case. She gets angry when any other woman seems close to Shido but she just pouts about it for the most part.
- Emergency Transformation
- Friendly Neighborhood Vampire: After Episode 4.
- Girl Friday
- May-December Romance: With Shido.
- Parental Abandonment: Riho's parents were killed by a Nightbreed.
- Plucky Office Girl
- Agent Peacock
- Blond Guys Are Evil
- Canon Foreigner
- Charm Person
- Depraved Bisexual
- I Love You, Vampire Son
- Name of Cain
- Stalker with a Crush
- Whip It Good: Just as Shido can use his blood as a sword, so Cain can use his as a whip.