>>279989324
Alright, Black Cat World Elder was "黒猫界長老". And the Honorary Ten-Time Champion was "永世十段". 永世 is apparently a lifetime title holder in things such as shogi or go. 十段 is "tenth rank", also from go. The name was spelled 黒井田 and you may notice the 黒 in it, which means "black".

Furinkan seemed to interpret 永世 or "eisei" as his first name, as it also means eternity. But it seems like it is probably a reference to his title.

>>279989242
Didn't have to wait long either, apparently.