Episode Title:Ultramarine.Episode Description:The Argos Flight and Idar Flight crews head to the West Indies to gather test flight data in tropical regions while having R & R at the resorts and participating in a PR photo shoot to raise morale. At first the vacation goes fine until Inia and Tarisa almost start a fight until the resort's commander suggest they settle things in a paddleboat race tomorrow. Yui and Cryska team up when Cryska suddenly faints. Yuuya swims over to help them but a storm suddenly comes, which the three are forced to seek refuge in a cave on a nearby island. As Yuuya heads to check their boat, Cryska, wondering why Inia is interested with Yuuya, asks Yui what is her relationship with him, much to the latter's shock.