Angel + Monster is the sixth EP by Japanese artist Koda Kumi, released on December 2, 2020.

It is her sixth official EP, her last being Gossip Candy, which was released in 2010 - the extended plays from her Fever series excluded.

[15] In the video, Koda Kumi and several of her backup dancers perform a dance in their own respective homes, consisting of various yoga poses and lite calisthenics.

[16] "XXKK" was created to celebrate Kumi's 20th anniversary in the music industry, with lyrics and visuals representing her title as "Queen of Live".

[17] In the video, Kumi dons a silver getup with a crown reading "XXKK", along with contrasting visuals representing her more elegant side during the bridge.

[9] The music video for "Killer Monster" was primarily a dance number with Kumi and her dancers donning urban grunge fashion.

Intermittent scenes of Kumi in other styles in back alleyways were edited in, while the main focus was the group dancing in front of a large graffiti mural.