When you see a subdomain of a respected university like tohoku.ac.jp, you expect it to work reliably and securely. Unfortunately, bureau.tohoku.ac.jp fails on both counts. The site is completely unreachable over HTTPS — the connection drops before any content loads. That's a serious problem for any website, and especially for one that might be used for academic work or internal tools.
There's no malware or blacklist history, which is good. But the absence of any Wayback Machine snapshots and the failure of the SSL handshake suggest this site may be an internal test or a retired project that's still live. For an education site, users should expect secure connections and basic contact information. Here, you get neither.
If you're a student or staff member who needs to access this site, try contacting your IT department directly. For everyone else: this is not a site you should visit or rely on. Until it supports HTTPS and actually loads, it's best to treat it as inaccessible and potentially compromised.