Hello Ayumu "Osaka" Kasuga,
I noticed that you changed the classification for some streets in the following changesets:
 https://www.openstreetmap.org/changeset/160960328
 https://www.openstreetmap.org/changeset/160959539
 One of the changes involved shifting the classification of this road from "Primary" to "Motorway" However, this classification does not seem to be suitable for the road network.
 Could you please provide the sources or reasoning behind these edits?
 Here’s the link to the streets for reference:
 https://www.openstreetmap.org/way/728130096/history
 https://www.openstreetmap.org/way/1050764767/history
 Best regards,
 Eslam Elsayed