Mary's Blood

The band signed with major record label Nippon Columbia and released their first album Countdown to Evolution on August 20, 2014.

On April 16 they played with thrash metal band Outrage, singer Nanase Aikawa joined them the following day, and Show-Ya frontwoman Keiko Terada performed with them on May 3.

After switching labels to Tokuma Japan Communications, Mary's Blood released their fourth album Revenant on April 18, 2018.

That same day, Mary's Blood played their first show in Europe as the headliner of Metal Matsuri in London at the O2 Academy Islington.

[24] In 2021, the band held the Kōtetsu Densetsu tour which featured special guests; Kentaro (ex-Gargoyle) on August 28, Masatoshi Ono on September 23, and Shingo☆ (Sex Machineguns) on October 23.

The band apologized for the sudden announcement and explained that they decided to have a "recharging period" for the members to grow further and said that when they restart activities, they hope to deliver the music of Mary's Blood in a "more evolved form.

[30] Following the hiatus, Saki continued to play in the band Nemophila (formed in 2019) until 2024, while Mari directed her focus to making drumming videos for her YouTube channel.

[34][35] Saki described Mary's Blood as a straight heavy metal band, but because they have many different styles of songs, she feels free to make whatever sounds she wants with them.

[36] From the beginning of the group, Mari and Eye have consciously aimed to have vocal melodies that are catchy and easy for Japanese people to listen to.

[37] The guitarist explained that Eye and Rio love visual kei music, which sometimes makes it difficult for her to find the tones to match the vocals in songs that they compose.

[36] Both Eye and Rio wanted to be in bands because of L'Arc-en-Ciel, Mari started playing music because of X Japan, and Saki was inspired to become a musician by Seikima-II.

[14] Rio has stated that the other members write the "so-called good songs," so the bassist believes she is responsible for bringing a different element via her own compositions.

[44] Mari described their debut album Countdown to Evolution as emphasizing "heaviness and speed," while Saki said they intended it to be their "most intense and technical" record up to that point.

For example, Yuyoyuppe's composition "Angel's Ladder" marks the first time Saki and Rio had ever played a seven-string guitar and five-string bass respectively.

[14] Eye said the recording environment for Revenant was totally different from those of their previous three albums, and explained its title was meant to mean the band was "reborn and starting over" while retaining their good qualities.