FAIRY TAIL: TWIN DRAGONS OF SABER TOOTH

Now the guild master of Sabertooth, Sting faces the trials of leading a guild and the responsibilities that come with it. A number of challenges come his and Rogue's way, including the kidnapping of one of their guild members and a mage attempting to steal their dragon slayer powers. They must fight to keep their Sabertooth guild family together. — Description from AniList community (anilist.co).