Listen to Me, Girls. I'm Your Father! - Season 0 Episode 1 Warmth

Yuuta and the girls win a family trip to a hot spring resort, where they unexpectedly followed by Raika, Kouichi and Shuntarou. As they spend time at the swimming pool, Sora becomes concerned that Raika might have feelings for Yuuta. She gets more anxious when she believes Raika wants to take Yuuta to a Lovers' Cape, though in the end, it turns out she wanted to take Hina. The next day, everyone goes to the Lovers' Cape to ring the bell together, making a wish that they'll all be together forever.