yes, I understand (and will obey) ( Osu in karate)
yes ( language= Kyotsu-go)
Japanese. "Yes", more or less, although the meanings of hai only partially overlap our "yes" and include other concepts that "yes" does not.
yes. As in "Hai, I'll do your homework", "Hai, I'll clean your room", "Hai, you can wipe over all my save games on FF9".