The Fairy Tail OVAs (Original Video Animations) produced around the 2014 series reboot are special episodes, often based on manga "omakes" (side stories or special chapters), that focus on humor, character development, and fan service rather than the main plot.
Many fans consider them "side-canon" (based on official side-stories), though they do not affect the main plot, notes Reddit. Key Episodes: Fairy Tail (2014) OVA
(2014) - Alternate universe high school setting. OVA 7: Fairies' Summer (2015) OVA 8: Fairy Tail x Hellsing (2015) OVA 9: Fairies' Christmas (2016) The Fairy Tail OVAs (Original Video Animations) produced