姦淫特急『夜鷹』～ 獣欲連鎖、真夏の花火大会 ～

The luxurious sleeper trains, Michishio and its successor Matsuba, were still running smoothly.
Now, the organization had added a new successor to the lineup: Yotaka. Alongside the Michishio in summer and Matsuba in winter, this third line was ready to go.

The plan was simple.
After the global virus outbreak, summer festivals and fireworks displays across the country were struggling to recover. By collaborating with these events, the organization aimed to attract and secure young, beautiful women.