Himmel/Synopsis

History
At some point when he was a child, Himmel was lost alone in a forest somewhere. He states that this was the first time he had experienced solitude in his life. It was at this point that he was found by Frieren, who told him the directions to a nearby human settlement without a word of encouragement. Himmel found this to be cold, but after seeing Frieren produce a field of flowers with a magic spell thought for the first time that magic was beautiful. It is implied that this incident is what caused Himmel to seek out Frieren as the mage for the Hero Party.

At some point around when he was 16, Himmel decided to officially set out on a journey to defeat the Demon King. He presumably asked Heiter to join him first, and the two would go on to meet and convince Eisen to join the party.

Before setting out officially on their journey, Himmel, Heiter, and Eisen are shown to be seeking out a mage. Upon finding Frieren living alone in the forest, Himmel asks Heiter for an assessment of Frieren's mana. Though Heiter called her an average mage, Himmel was able to intuit that she was the strongest mage he had ever met.

Though Frieren initially did not want to travel, stating that she had not fought a demon for 500 years and that her chance to journey had passed, as it was too late now. However, Himmel declared that what she had done in the past was unimportant, as he was talking instead about the story that she would have now. He stuck out his hand and told her to accept it, as he was her chance at traveling, and this would ultimately be what gave Frieren the courage to set out on their journey.

The Hero Party successfully defeated the Demon King when Himmel was 26 years old.

Beyond Journey's End
After defeating the Demon King, the Hero Party promised to meet again in 50 years in order to watch the Era Meteors together. Once fifty years had passed, Himmel, now an old man, reunited with his group for one last adventure, before passing away shortly afterwards at the age of 76. His death became the catalyst for Frieren's journey to better understand humans.