This build have some flaws that I can point out as I use Midoriko for long time.
1.If Midoriko HP reach 1, she will get killed by 3 range weapon without vantage activation. (awakening won't help if enemy have unit with flamboyant and/ or raven strike, she will take final hit and die peacefully)
2.Ignore Midoriko, freeze or silence her then deal with other unit first. (freeze will make midoriko and partner can't do anything, silence will guarantee her death as enemy can move other units to reach her)
3.No benefit from forging tome because most player will press handicap button then all weapon will back to +0 condition.
4. lack power after get to play in handicap condition.
5. She may not kill anyone in full HP condition, she will start killing after lost half or more hp. But as I mention, just ignore and kill her last, she won't harm anyone as her MT is very low in handicap condition. (she will be fine in normal match, but stand no chance in limited match as all unit got no benefit from eternal seal)
6.after enemies ignore your midoriko, you have to switch to her partner. then your partner will be killed(as this build, kamui will get killed by wyrmslayer, dragon god,armorslayer)If you have to switch to kamui then she will do nothing until kamui die first.
All I can say, clever players won't get harm from this build if they know what are you up to.
change vengeance to other offensive proc skill and change awakening to flamboyant so she can start killing right away.