The collaboration event between Farewell to the Light of Youth and "Fankill Alterna" will start on April 26th. Princess Mori and Princess Buku, who were born in a YouTube project, appear in the game

The collaboration event between Farewell to the Light of Youth and "Fankill Alterna" will start on April 26th. Princess Mori and Princess Buku, who were born in a YouTube project, appear in the game
 Gumi today announced that it will hold a collaboration event between the blockchain game "Phantom of Kill" and "Farewell to the Light of Youth" from April 26th. "Mori-hime" and "Buku-hime", which were conceived as part of the "Let's make a kill princess" project on the game's official YouTube, will appear in the game....

The linked article is in Japanese.