The Tsuda Sweets ping-pong tournament heats up when Yui and Masugu face off. While both their departments are in it to win it, the low-key lovers are more concerned with their steamy side bet involving kinky cosplay. Later, marriage is on Yui's mind, but Masugu doesn't seem too interested in popping the question. As she scrambles to sort out her future, Yui's forced to confront her own big question: what does she want out of life?