Rimless ~Fuchinashi no Sekai~ (Rimless ~フチナシノセカイ~ lit. "Rimless ~Rimless World~"?) is the first ending theme for the first season of Toaru Majutsu no Index. It was introduced in the first episode of the anime and was replaced by Chikaigoto ~Sukoshi Dake Mou Ichido~ in Episode 20 .


It was composed and sung by Iku, who did the music as well along with Kazuya Takase who also did the arrangement.

The single release features the full version of the ending theme.

  1. "Rimless ~Fuchinashi no Sekai~" (Rimless~フチナシノセカイ~?) – 4:01
  2. "Nagori no Tsuki" (名残の月?) – 4:39
  3. "Rimless ~Fuchinashi no Sekai~" -instrumental- (Rimless~フチナシノセカイ~?) – 4:01
  4. "Nagori no Tsuki" -instrumental- (名残の月?) – 4:35


By appearance


Japanese English Translation
Nee kikoeru?
Kioku wo samayotteru
Nee kokoro o
shinjite ikite yukereba
Hey, can you hear it?
My memories are wandering...
Hey, my heart,
will it be fine to believe in it?
Ikiru sekai ga
tatoe chigatta to shitemo
mamoritai mono ga aru nara...
Even if the
world I live in was different,
and if there’s someone I want to protect...
Sashidashita "chikara" wa dare no tame ni?
Tokihanatsu ikusen no MANA
Sono shigusa ga sono manazashi ga
kokoro o shimetsukeru
For who will I hold out my right hand?
Releasing plenty of mana.
That gesture, that gaze,
they suffocate my heart.
Don’t let go of my hand.


Toaru Majutsu no Index Opening Theme
Not applicable Rimless ~Fuchinashi no Sekai~Chikaigoto ~Sukoshi Dake
Mou Ichido~

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