Ai Kayano
A fourth and fifth season were announced at Symphogear Live 2016. The fourth season, "Senki Zesshō Symphogear AXZ", aired between July 1, 2017 and September 30, 2017. The opening theme is "TESTAMENT" by Mizuki while the ending theme is "Futurism" by Takagaki. The fifth and final season, "Senki Zesshō Symphogear XV", aired between July 6, 2019 and September 28, 2019. The opening theme (episodes 2-11; ending for episode 12) is "METANOIA" by Mizuki, while the ending theme (episodes 2-11; openingo for episode 12) is "Lasting Song" by Takagaki. The season was initially scheduled to start airing in April. The OVAs, "Senki Zesshou Shinai Symphogear", started to be included with G's BDs. The G OVAs are included in the two last BD volumes of the series, while from GX onwards the OVAs are included in the last 4 BD volumes. The first two OVAs haven't an ending theme, while in the GX and AXZ's ones the ending theme is "Itsuka no Niji, Hana no Omoide" by Aoi Yuuki and Yuka Iguchi, except the last AXZ's OVA, which ending theme is "Todoke Happy Uta Zukin!" by Takagaki. From second season G to AXZ, the ending theme for every season finale is "Nijiiro no Flügel", performed by Aoi Yuuki, Nana Mizuki, Ayahi Takagaki, Yoko Hikasa, Yoshino Nanjo, Ai Kayano &amp; Minami Takayama; and for the series finale, the ending theme is "Ashita e no Flügel", performed by Aoi Yuuki, Nana Mizuki, Ayahi Takagaki, Yoko Hikasa, Yoshino Nanjo, Ai Kayano &amp; Yuka Iguchi.