For all my searching, I can't answer what feels like it should be an obvious question. When can you target yourself with a technique? Some techniques feel like they could very easily include the user in targets, while others clearly cannot, but I don't see a general answer. I will list some techniques for comparison, all with different text regarding the targets.
Lightning Raid, rank 2 Fire Shuji - Once per scene, as an Attack and Movement action, you may make a TN 3 Command (Fire) check targeting any number of characters in the scene (or one cohort in a mass battle).
Success raises the initiative of all targets. Can you include yourself in this maneuver in a skirmish, or can you only boost the initiative of your companions? It seems that being able to lead the charge would work thematically, but it is unclear if you can target yourself.
Spiteful Loss, rank 1 Fire Shuji - If you fail, forfeit 1 glory . Then each participant receives strife equal to 1 plus the shortfall of the check on all participants in the game.
Theoretically, this should inflict strife on yourself since it isn't all OTHER participants, but if you are not a valid target for your own shuji, it would not cause you strife.
Ruse of the Moon's Reflection, rank 5 Air Shuji - As a Scheme action, you may make a Command (Air) check targeting any number of characters in the scene who are not hostile to each other. The TN is equal to the highest vigilance among your targets. In a mass battle, you must target all commanders (other than yourself, if applicable).
The addition of "other than yourself, if applicable" implies that you could indeed target yourself without that addendum.
Malleable Formation, rank 3 Water Shuji - Once per scene as a Movement and Support action, you may make a TN 2 Command (Water) check targeting two willing characters at range 0–2 of you who could reasonably reach one another’s positions
Theoretically, if you are a willing character, could you use this to swap yourself?
Civility Foremost, rank 2 Earth Shuji - As a Scheme action, you may make a Command or Courtesy (Earth) check targeting one character to claim protection for an individual of your choice by rights of honor. The TN of the check is equal to the target’s vigilance.
In this case, the TARGET is technically the person you are preventing from attacking. Can you claim protection for YOURSELF with this technique?