- TogetherPerformed by Fumie AkiyoshiLyrics by D&P ProjectMusic by RieArrangement by Jun Ichikawa(First opening theme, episodes #2-78)
- We Will Be Heroes(eleventh theme song)Written and Produced by John Loeffler and David WolfertPerformed by Kirsten Price
- Kimi no Soba de -Hikari no Têma- (Winter Version)(By Your Side -Hikari's Theme- (Winter Version))Performed by GrinLyrics by HIKARI-ProjectMusic and arrangement by Kazuo Yoda(Third ending theme, episodes #51-61)
- We Will Be Heroes(dutch version)Performed by Herman van Doorn
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