「面對無法改變的過去，我們唯有接受它並堅定地邁向前方。」
一座拱形的機械設施巍然矗立著，主角與父親攜手合作啟動了它，但突如其來的超載使一切失控。父親因意外快被吸入漩渦，雖主角勉力抓住他，卻抵擋不住強大的吸力。父親為了不拖累主角而鬆開手被漩渦吞噬，設施隨後爆炸。
主角從回憶中醒來，再次啟動設備，她成功穿越到一處住宅街道，看見父親和年幼的自己在研究時空門，試圖換取正確的設計圖，以防未來的憾事，卻被年幼時期的自己發現而慌張逃離，但被父親攔住，在父親面對她時，卻突然被傳送離開。
這次她來到啟動設施前幾分鐘，為了防止事故發生，她決定強行關閉設備但設備卻依然失控著，正當父親與過去的她快被吸入時，她上前抓緊欄杆，防止父親與過去的他被吸入漩渦，父親目睹一切後也明白當初遇見的女孩是未來的主角，為了不連累主角，父親像過去一樣鬆開了手被吸入漩渦中，主角也在此刻被傳送回原時空。
就這樣，她結束了她的這段旅程。
"In the face of the past that cannot be changed, we can only accept it and move forward firmly."
An arched mechanical facility stood tally. The protagonist and his father cooperated to start it, but the sudden overload made everything out of control. His father was almost sucked into the whirlpool by accident. Although the protagonist tried to catch him, he couldn't resist the strong suction. In order not to drag the protagonist, the father let go of his hand and was swallowed up by the whirlpool, and the facility then exploded.
The protagonist woke up from the memory and activated the device again. She successfully crossed to a residential street and saw that her father and the young self were studying the space-time door, trying to get the correct design in case of future regrets. However, she was found by herself when she was young and fled in a panic, but she was stopped by her father. When her father faced her, she suddenly Sent away.
This time, a few minutes before she came to the start-up facility, in order to prevent accidents, she decided to forcibly turn off the equipment, but the equipment was still out of control. Just as her father and her in the past were about to be inhaled, she stepped forward and grabbed the railing to prevent her father and the past from being sucked into the vortex. After seeing everything, her father also understood that the girl she met was the future. In order not to involve the protagonist, his father loosened his hand and was sucked into the whirlpool as in the past, and the protagonist was also sent back to the original time and space at this moment.
In this way, she ended her journey.
