Travel Insurance for multi one way flights?

Are there any good reputable travel insurance companies that will cover a trip comprised of 2 one-way flights? I'm planning on flying from the US to Tokyo on a one-way ticket and then leaving from Kyoto back to the US on another one-way ticket.

I'm getting mixed information so far, and it appears I have to buy 2 policies to cover my trip. The only company I've seen that would cover this type of travel is World Nomad but the bad reviews are steering me away.

Has anyone else had experience in a similar situation? Any advice would be appreciated!