Looks incredibly sketchy for all the reasons below.
- No Japanese version of their homepage (nor can I find any information on them in Japanese at all by searching for potential Japanese translations of their company name).
- That particular address (21st floor of Shiroyama Trust Tower), is a
rental office, meaning anyone could rent space there and use it as an address.
- Likewise, the phone number on their homepage (area code 050) is an VoIP phone number, which are cheaply obtained by anyone (even people not actually in Japan) and are often (not always) used for fraudulent purposes.
- And lastly, this may be subjective, but their entire homepage is a bunch of meaningless business mumbo-jumbo with no real substance, the pictures on their homepage look like random clip art photos of a bowing Japanese man, etc., rather actual employees of a real company, and so on.
Put it all together, and I'm 99.99999999999999% sure this company is a fraud, perhaps perpetuated by someone who isn't even in Japan (or a Japanese national).