Taisei is a popular male given name in Japan, derived from the kanji characters '大' (dai) meaning 'great' and '生' (sei) signifying 'life'. Its literal translation is 'great life', reflecting the wish for prosperous lives filled with vitality and success, as traditionally bestowed upon influential families. Notable figures like Taisei Iwasaki, son of Mitsubishi's founder, have borne this name throughout history. Today, Taisei remains popular among Japanese parents due to its positive connotations and rich historical associations.