Miyako Matsumoto
Muscle Venus' fourth successful defense took place on January 4, 2014, when they defeated Kurumi and Kyoko Inoue. Following the match, Shida announced her resignation from Ice Ribbon, effective March 30. Despite the announcement, Shida and Fujimoto continued their reign as the International Ribbon Tag Team Champions, defeating .STAP (Maki Narumiya and Risa Sera) on February 15, Mio Shirai and Miyako Matsumoto on March 9, Hamuko Hoshi and Miyako Matsumoto on March 12, Kurumi and Tsukushi on March 15, and N3 (Maki Narumiya and Meari Naito) on March 22 in what was billed as Muscle Venus' final match together. From February 21 to 25, Shida worked a four event tour with Wrestle-1, wrestling Shuu Shibutani in singles matches. The series ended 2–2 with Shida winning the second and fourth matches. Shida wrestled her final Ice Ribbon match on March 30 at Korakuen Hall, when she was defeated by longtime tag team partner Tsukasa Fujimoto in a singles match. Post-match, the two relinquished the International Ribbon Tag Team Championship, ending their reign during which they set new records for both the longest reign, at 309 days, and most successful title defenses, with nine.