

Overview
An immortal being takes on the form of a human boy, wandering the earth and experiencing the pains and joys of life throughout his story without end.
Cast
139Open an episode for ages at its air date.












Full cast · 139
























































































































- TMDB ID
- 97525 ↗
- First aired
- 2021-04-12
- Last aired
- 2026-03-28
- Status
- Ended
- Episode runtime
- 25 min
- Genres
- Animation, Action & Adventure, Sci-Fi & Fantasy
- Creators
- Unknown
- Countries
- JP
- Languages
- Japanese
Family guidance
Age ratings
TV-14United States of America (US)
This program contains some material that many parents would find unsuitable for children under 14 years of age.
15United Kingdom (GB)
No-one under 15 is allowed to see a 15 film at the cinema or buy/rent a 15 rated video. 15 rated works are not suitable for children under 15 years of age.
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Kids-In-MindEditorial 0–10 ratings
Kids-In-Mind rates movies, not TV series. This says nothing about the content of this series.
All regional certifications (17)
TV-14United States of America (US)
This program contains some material that many parents would find unsuitable for children under 14 years of age.
15United Kingdom (GB)
No-one under 15 is allowed to see a 15 film at the cinema or buy/rent a 15 rated video. 15 rated works are not suitable for children under 15 years of age.
MAustralia (AU)
Recommended for mature audiences; M-rated content may only be broadcast between 8:30 p.m. and 5:00 a.m. on any day, and additionally between 12:00 p.m. and 3:00 p.m. on schooldays.
14Austria (AT)
Freigegeben ab 14 Jahren
16Brazil (BR)
Content suitable for viewers over the age of 16.
14+Canada (CA)
Programming intended for viewers ages 14 and older. May contain strong violence and strong profanity, and depictions of sexual activity as long as they are within the context of a story.
15+Czech Republic (CZ)
Suitable for persons aged 15 years and over.
16Hungary (HU)
Programs not recommended for teens and children below the age of 16, may contain more intensive violence and sexual content. A yellow circle with the number 16 written inside is used for this rating.
15Ireland (IE)
15A - No-one younger than 15.
B-15Mexico (MX)
Designed for ages 15 and up (allowed only between 19:00 and 05:59).
16Poland (PL)
Deviant social behaviour, world filled with violence and sexuality, simplified picture of adulthood, display of physical force, especially in controversial social context (against or by parents, teachers, etc.), immoral behaviour without ethic dilemma, putting the blame on the victim, excessive concentration on material possessions.
15Romania (RO)
Programmes not recommended for teens and children below the age of 15, may contain more intensive violence and sexual content.
M18Singapore (SG)
No additional details available.
15South Korea (KR)
This rating is for programs that contain material that may be inappropriate for children under 15, and that parental discretion should be used. Examples include most dramas, and talk shows on OTA (over-the-air) TV (KBS, MBC, SBS), and many American TV shows/dramas on Cable TV channels like OCN and OnStyle. The programs that have this rating may include moderate or strong adult themes, language, sexual inference, and violence. As with the TV-MA rating in North America, this rating is commonly applied to live events where the occurrence of inappropriate dialogue is unpredictable. Since 2007, this rating is the most used rating for TV.
12+Taiwan (TW)
Not suitable for viewing by children under the age of twelve, split from the former rating Parental Guidance.
น 15+Thailand (TH)
Nor 15+ Movies appropriate for audiences aged 15 and older. Some violence, brutality, inhumanity, bad language or indecent gestures allowed.
น 18+Thailand (TH)
Nor 18+ Movies appropriate for audiences aged 18 and older.









