- Sonia, princess of Astria, breaks into the prison to rescue Yuma from the empire.
- Since Astria is at war with the empire, it needs to befriend with the dragon in order to gain momentum.
- At the prison, Sonia's small team found Yuma, but they need to find the way out.
- Kirika protects Sonia and creates diversion.
- Imprisoned for so long, Yuma lost willpower. But after seeing two brave women, he intends to fight the empire again.
- Her class is Magic Cannon Knight.
- Her weapon is Divine Cannon.
- She excels in healing magic and supportive magic.
- "Purge target lock on.... divine punishment enforcing. That dragon soul, let me offer it to the god."
- She was secretly created by the church as experimental bio weapon. She carries on her task with cold expression.
- It seems her demon eye (left eye) allows her to use magic-operated heavy weapon at will.
- She looks young but possesses superhuman strength.
- She's under Joachim's mind control, and suffers dissociative identity disorder. She can switch between Marion and Eto.
- She first met Yuma when he was captured.
- His title is the Alchemist of Judgment.
- His class is Dark Priest.
- He excels in dark magic.
- His weapon is blade called Psycholops (Cyclops).
- "Your sinful body, let me recreate as divine creation."
- He leads the study of ancient magic. He's also master of biology and medicine.
- He's interested in nothing but experiments.
- Several bio weapons were created from the study of dragon power, starting from Marion.
- Because Marion is his best creation, he's strongly attached to her.
- BAND requires at least one bar of Party Gauge to activate. Gauge then gradually depletes to zero where effect wears off.
- Even in the same Rune Song, the effect can change accordingly the "Center" of the BAND.
- Kirika as Center in Rune Song of Spring will provide damage reduction and bad status effect immunity.
- Lesty as Center in Rune Song of Spring will provide damage reduction and boost guard effect.
- Agnum as Center in Rune Song of Spring will greatly boost evasion.
- Kirika will sing as Center, but will play her Armonix bow when non-Center.
Shining Resonance will be released on December 11. Sonia is expected to be playable in Beast Note's most anticipated fighting game Blade Arcus.