Oensei is among the Age of Empires II players representing United States. To date, Oensei has played 15 matches in Age of Empires II. Oensei focuses mainly on unranked matches.

Ranked matches are not part of Oensei's Age of Empires II experience so far. Playing the flank role, Oensei achieves a 62.5% win rate over 8 matches.