Following its release, it brought Kanaria to widespread popularity, and it received covers from dozens of VTubers and other singers.

[4] Subsequently, dozens of VTubers and other singers posted covers of the song, including from Kizuna Ai, Kuzuha [ja], Nijisanji members, and Upd8 [ja] member Mei Osanai, as well as a duet by Calliope Mori and Gawr Gura;[4][1][5] Eimika Katsuya attributed this widespread trend to the popularity of Kanaria's previous song "Hyakkisai".

[4] Rena Murakami of the Japanese culture site Real Sound [ja] characterizes the lyrics as "reminiscent of the execution of a king".

[6] In a column for the lyrics search and music news site UtaTen [ja], Amu Machioka characterized the song as an allegory for the house arrest, trial, and execution of Louis XVI (whom they interpreted as the titular King), told from the perspective of his executioner Charles-Henri Sanson.

[7] Eimika Katsuya said of "King": "It's a dark song with an absurd string of words, but the lyrics have a pleasant rhyme that makes it addictive.