There are several Way of the Kensei Monk subclass mods on Nexus - I have not tried them, and none are 5e RAW representations, so here you go. Acknowledgements for everyone who made this subclass for BG3 before me,
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File credits
drkekyl khn functions, Diz SE code
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***Before updating - respec into something else | save | exit | update this mod | respec back t0 Kensei***
All script extender functionality converted to Osiris (credit Celes for the work on this)
Fix kensei weapons damage scaling not reverting to normal after respec
Fix Greatclubs not using Dex when it is higher than Strength
Refresh subclass icons
Data cleanup
Version 1.9.0.8
Fix for SE console errors (last time)
Version 1.9.0.7
Fix for SE console errors (take 2)
Version 1.9.0.6
Fix for SE console errors (take 2)
Version 1.9.0.5
Fix for SE console errors
Version 1.9.0.4
Move the Unarmed/Weapon Attack toggle to Kensei level 3 exclusively, and removed the CF integration for that ability
Version 1.9.0.3
Fix functions
Version 1.9.0.2
Added a toggle that will allow you to use unarmed attacks while holding a melee weapon [NOTE: This WILL be added to all Monks at Level 1. You will likely need to RESPEC]
Removed the standalone unarmed attack spell that was there to allow you to Agile Parry properly - use the toggle now
Version 1.9.0.1
Fix issue where Off Hand Active status would clear on its own
Version 1.9.0
Patch 7 Comptaible - Update Improved UI, continue to use Compatibility Framework + Community Library
Version 1.0.1
Fix longbows missing from monk weapon override SE code
Fix scrolling SE console errors some folks were seeing