To Your Eternity released on HBO Max on June 2nd, 2021 and released episodes weekly whenever Crunchyroll released a dubbed episode two days prior (sometimes they didn't, nobody's perfect).
On September 17th, 2021, every episode was re-rated TV-14. Seeing as I loved this series and didn't want it to meet the same fate as Re:ZERO, I quickly messaged HBO Max's help page on Twitter to inform them of this change. I feel like I freaked someone out over there, because 12 days later episode 1 was re-rated TV-MA-L, episode 2 went back to normal, and nothing else had changed. A couple weeks later, all of the ratings went back to normal.
1 - "The Last One" - TV-PG-L
2 - "A Rambunctious Girl" - TV-14 (Original) / TV-14-V (Re-rating)
3 - "A Small Evolution" - TV-14-V
4 - "A Large Vessel" - TV-14-LV
5 - "Those Who Follow" - TV-14-LV
6 - "Our Goals" - TV-14-LV
7 - "The Boy Who Wants to Change" - TV-PG-DLV
8 - "Monster Brothers" - TV-14-LV
9 - "Deep Memories" - TV-PG-V
10 - "New Family" - TV-14-LV
11 - "Gift From the Past" - TV-PG-L
12 - "Awakening" - TV-14-DL
13 - "Aspiring to Go Higher" - TV-14-LV
14 - "Jananda, Island of Freedom" - TV-14-LV
15 - "A Girl Named Tonari" - TV-14-LV
16 - The Children's Dreams" - TV-14 (Original) / TV-14-LV (Re-rating)
17 - "The Defeated" - TV-MA-LSV
18 - "To Continue On" - TV-14-LV
19 - "Wandering Rage" - TV-14-DV
20 - "Echoes" - TV-PG-V