This manga doesn't hit as hard as frieren but God damn does is still slap on the sadness of elven lives when interacting with humanity
It's a different flavor of manga. The setting is similar, but the focus of the story is different.
Frieren is narrowly focused on elf grannie, Fern and Stark. Everything that happens is about how it affects them. Even Himmel, the hero party and the other mages are given just as much attention as needed to give depth to those 3.
High Elf uses just Aesir to focus on interactions with dozens of people. Each character is given their time, even if Aesir is the only one we follow. Wynn, Irena, Kaede, the Dwarf King, Aesir's magic sword apprentice, the 3 Disciples, etc.
The tones are more similar, but there is def a difference. Frieren is more wistful while High Elf is overflowing with excitement. The latter can be more outwardly sad while the former is more melancholy.
I love them both for similar reasons, but they are different.