OAD series for Season 2. 2#14 was released on May 16, 2014, included in the limited edition DVD bundled with Volume 10. 2#16 was released on February 17, 2015, included in the limited edition DVD bundled with Volume 11. 2#17 was released on September 17, 2015, included in the limited edition DVD bundled with Volume 12. 2#18 was released on April 15, 2016, included in the limited edition DVD bundled with Volume 13. 2#19 was released on December 16, 2016, included in the limited edition DVD bundled with Volume 14. 2#22 was released on September 15, 2017, included in the limited edition DVD bundled with Volume 15. 2#23 was released on April 17, 2019, included in the limited edition DVD bundled with Volume 17. 2#24 was released on August 16, 2019, included in the limited edition DVD bundled with Volume 18. 2#25 was released on September 17, 2020, included in the limited edition DVD bundled with Volume 19.