Meet your fate...
End in hkd b23 xx mb 4, which grants overhead/low mix. Some wakeups may beat the option, but you can bait and punish by either ducking, jumping, release arrow after invincibility frames are done, or simply cancel.
On hit it leads to fullscreen and a free arrow load and potential zoning and meterbuild. On block, you are plus in a range GA has a lot of good options
In the video I gave some examples of different oki scenarios and if it is blocked or on hit.I would definitely say it is worth to spend the bar on mb trait, because green arrow basically always has lots of meter. And besides, it is a BOXING GLOVE ARROW