The place the seniors and I arrived at was an otherworldly island! Through the flow of events we ended up revitalizing the island, but before I knew it the seniors were having sex with each other and even got pregnant with a baby! Wait, what is this rough synopsis. Is my cute part completely cut!? Well, I wasn't of much use anyway... haa~, feeling blue... 'Please don't abandon even a useless me like this!' But! My beloved senior relied on me! Nfufu~, starting next time am I the main heroine~? Because I was floating like that I failed again... Uu, I have to make up for this no matter what. Yes! I have to repay the senior with my body! Mystery! Pregnancy and childbirth in one night!? Chiyo 'It's unfair! I'm jealous! Hiro-senpai, please do it with me too!'