Masayo Harajuku, known in the anime Metal Fighter Miku, is a former Neo Pro-wrestler who plays a crucial supportive role behind the scenes. She is married to Tokichiro Harajuku, the founder of the TWP talent agency, and it was her persuasion that convinced her initially reluctant husband to enter the Neo Pro-Wrestling business. Drawing on her own past in the sport, Masayo maintains a wide network of valuable contacts within the wrestling world, most notably the seasoned coach Eiichi Suo and the reigning champion Aquamarine. Her primary motivation is to see the Pretty Four, the team of young wrestlers managed by TWP, succeed. She uses her connections to recommend Eiichi Suo as their coach, a decision that proves pivotal for the team’s growth. Masayo’s personality is defined by a blend of practical experience and quiet determination; she is a steady, behind-the-scenes presence who offers guidance and resources rather than stepping into the ring herself. Her relationships are central to her role: she supports her husband Tokichiro in running the promotion, facilitates the alliance between the Pretty Four and their demanding coach, and remains a link to the champion Aquamarine, whom the team idolizes. While she does not undergo significant personal development over the course of the series, her consistent reliability and insider knowledge make her an indispensable asset to the TWP. Her notable ability is her deep understanding of the Neo Pro-Wrestling industry and the savvy to connect the right people at the right time, ensuring the Pretty Four have the mentorship and opportunities they need to rise in the ranks.