Ep 19. The Couple's Experience -- Forbidden Island of Love!

As Kyosuke and Madoka are walking along the beach, they encounter a couple who have taken a small row boat to an island near the shore. The couple explains that this island is known as the "Forbidden Island of Love" and that it is said that anyone who goes there with their significant other will become closer to one another. Intrigued, Kyosuke and Madoka decide to investigate the island themselves.

As they explore the island, Kyosuke and Madoka begin to feel a strange energy that seems to enhance their emotions. They start to feel an intense connection with one another and become more physically affectionate. Kyosuke even starts to imagine what it would be like to kiss Madoka. However, their romantic moment is abruptly interrupted when they stumble upon a hidden cave on the island.

Inside the cave, they discover a strange crystal that seems to be amplifying the energy on the island. They realize that the crystal must be what is causing their intense emotions and decide to leave the island before things get too out of hand. However, on the way back to the mainland, their boat begins to drift away from the shore and they end up stranded on a nearby island.

As they wait for someone to rescue them, Kyosuke and Madoka are forced to work together to survive. They gather food, build a shelter, and try to start a fire. During this time, they grow even closer to one another and Kyosuke struggles with his feelings for Madoka. He begins to wonder if he is truly in love with her or if it's just the effects of the crystal.

Meanwhile, Hikaru and Yuka are also stranded on a nearby island and are forced to work together to survive. They too feel the effects of the crystal and begin to behave in a more intimate manner towards one another.

Eventually, the four of them are rescued and return home. Kyosuke is still struggling with his feelings for Madoka and decides to talk to her about it. He confesses that he's not sure if his feelings are real or just a result of the crystal's effects. Madoka reassures him that their emotions and experiences on the island were real, but leaves it up to him to decide how he truly feels.

In the end, Kyosuke realizes that he does love Madoka and decides to pursue a romantic relationship with her. Hikaru and Yuka also come to the same realization and decide to pursue their own love interests as well. The episode ends with Kyosuke and Madoka sharing a tender moment alone together.