I find that Skype/Zoom/similar sessions are much more focused, productive and convenient for serious study than coffee shop sessions. Sessions are focused around articles from The Economist or similar, or as required by the student.
I offer one to one high level conversation, reading and writing practice, especially to improve IELTS, EIKEN and similar scores. Sources: current affairs articles, TEDs, MOOCs etc, and from student.
I am happy to help Japanese teachers of, and translators to, English.
I re-write (correct/improve) business documents, academic papers and essays/assignments.
For face to face meetings I am able to meet (almost) anywhere between Haijima and Shinjuku.
Last year I began to use Skype for lessons and I am impressed at how effective Skype sessions are.
Serious only please!