This chapter was based on
Toshimaen theme park which opened in 1926 and closed its doors in 2020. The park itself was built on the ruins of an old castle where the "Toyoshima" clan lived.
In 2023, it reopened as a Harry Potter studio tour. Yay, I think?
Miyamoto's suit jacket...is most likely still at the cafeteria (bottom right)
pg.7, the intro to the "Flying Poseidon" is the same for when they introduce the "Espoir" in Kaiji