Shun has always wondered what was on the other side of the stone walls surrounding and beyond the tunnel out of Kaijou-shi ever since he was a child. However, he never ventured out since every time there was an opportunity to do so, he fell ill or there was some family business. After he graduated from Seihoukan Gakuen, he decided right then to leave his hometown. The next spring, he received a call from his mother, asking him to come back for the Seikousai festival which he had always attended since he was small. His family kept the items for the festival, but this year’s event will be even bigger than normal. His imouto Sana and osananajimi Yuki both had been chosen as the miko for the kagura dance. As he was returning back to Kaijou-shi on the train, he reflected on why he left his hometown. He had found nothing special on the other side, just the beginning of a new life. However, it felt like he had lost something along the way. Then he could hear his osananajimi’s gentle voice: “Shun-chan, it’s been a while since you’ve been back”. He felt like those words livened his spirits and comforted his heart.