Online shogi person-to-person. Must be elder-friendly

[130s]

Match b/w grandpa and a grandchild online. Tech investigation for https://github.com/kinu-garage/kokucho2679/issues/25

Req (subject to change)

• Android on both ends.
• At least one side must be Japanese-only.
• Has to be very low usability hurdle (grandpa is the least tech savy).
• "Matta" as grandchild may use a lot.
• (Optional) Handicap
• (Optional, may not be needed) If voice chat is supported.

[130s]

Checking https://my-best.com/2344

Heard about 将棋ウォーズ. Installed.