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Utsubo Kokoro is one of the Main characters of Blue Reflection Tie.
She also appears in Blue Reflection Ray, in which she is stated to be a "Reflector Candidate" rather than a Reflector like in Blue Reflection Tie meaning she was eventually promoted to Reflector, as she was one in Tie.
The girl Hoshizaki Ao first met in a lost world. She always seems to be vacant at her own pace. She has a calm heart and she treats Ao who suddenly arrives kindly. She has lost her memory and is she originally a resident of this world? It's unclear if she or, like Ao, she got lost in this world.
- Utsubo means "soft, pliable, quiver" (靭).
- Kokoro is written in hiragana (こころ), which has no special meaning. However, when written in kanji (心), it could possibly mean "heart, mind, soul".