SephirothSword57, also known as Seph-sama, is a satirical character portrayed by a YouTuber and TikToker of the same name who is a stereotypical weeaboo who constantly inserts Japanese and Japanese-sounding words into his speech, wears a fedora and worships all things Japanese while bashing on Nintendo and "ignorant hateful Westerners." The character presents himself as a Japanese expert and spiritual educator and achieved virality online in the summer of 2024 as several of his videos went viral on TikTok and X (formerly known as Twitter).