"We do not accept letters or postcards with lottery numbers on them. Please use general postcards or standard paper."Nijisanji have updated their fanmail terms. I'm not sure what's specifically changed, but I thought I'd mention it here for archival sake.
Lol this one cracks me up, who sends lottery numbers to a vtuber? Also why are lottery numbers allowed on "general postcards" or "standard paper" but not "letters or postcards?"