In the castle of lions everyone was asleep minus to paladin you and Keith because of Allura once again and her judgy bossy and unreasonable and unrlieable things. Keith was in the castle training deck area without bothering anyone nor waking them up.

While you were walking around trying to get rid of thoughts. As you were walking passed the training room deck you heard Keith say "Who’s there?” meaning he knows someone matter of fact you were there.