Regarding r127885

Could you tell me what or who do the tags Ailushi and CE-Chaffee refer to, please? I assume these are participants but I cannot find their names in the credits.

t144.1: I found their names in the comment published by 越智友己, maybe those are aliases of some of the participants but I can't figure them out. These tags can be removed for now if you think it is inappropriate.
Apologies for the confusion caused.