Seikoku no Dragonar

Synopsis

After arriving at the training camp, the student council continues their efforts to talk to Gawain. After managing to get on Gawain's back, Ash is knocked out and speaks with Gawain in the Highdragon Workshop. While there, Ash finds out that the reason Gawain will not let Lucca ride him is because the two had an accident recently, and he does not want to put her in danger like he did before.

(Source: Wikipedia)