Does anyone know where I can find this? If it’s even possible to find it?

Howdy, sorry if this isn’t the right way to ask this; I rarely ever use Reddit. I’m looking for the bonus sequel for Seven Princes of the Thousand Year Labyrinth. From what little info I was able to find, they came out with a two volume sequel called Sennen Meikyuu no Nana Ouji : Eikyuu Kairou no Kishi or The Seven Princes of the Thousand Year Labyrinth: Knight of the Eternal Corridor. I don’t know if it was ever released in English. At this point I’m lowkey doubting it even exists. Any help or advice would be much appreciated. Thanks!