Combat Mechanism

The combat mechanism in Touken Ranbu is pretty similiar to Kantai Collection, where the branching,and Attack decided by RNG. but in Touken Ranbu there's some change feature.

Shinken Hissatsu
Shinken Hissatsu is cut-in in Touken Ranbu, there's some certain condition to met. Still small information about this feature.

IMPORTANT!

About battle mechanism, awakening/shinken hissatsu (覚醒・真剣必殺) and losing your sword: This is information gathered from various Japanese players’ tweets. It’s still being re-tested for confirmation on the Japanese wiki, but it’s probably quite important to remember this just to play on the safe side.

If you have played Kancolle before, you would be familiar with the battle system that would make your ship daughter sink when sent forward while heavily damaged. In Touken Ranbu, that also seems to be the case.

However, There's reports that say unlike in Kancolle, in Touken Ranbu your swords can break even when it’s still in medium damage (中傷), if certain conditions are met. Reports so far says that sending your sword to a battlefield when he’s slightly tired (orange) will result in lower status during the battle. You cannot check whether your sword is tired or not during the battle in front lines. From world 4-1 onwards, it is most likely that your swords might be tired when reaching the boss node. After winning the battle in the boss node, however, it is recovered.

So what happens if your sword is very tired (red) and you send him out on a battle is:

a) he is more likely to be attacked/damaged/losing all his troops, and

b) there are chances of him breaking in the same node even when he is still on medium damage.

Various tweets reported that chances of a sword breaking is higher when he does a shinken hissatsu on the node and stays in the front rows despite being heavily damaged.

This is not confirmed yet, but remember that Kancolle and Touken Ranbu are two separate games albeit being similar, and the battle system in Touken Ranbu is not yet fully understood. If these reports are true, then it might be the reason why a sword is pushed backwards when it is heavily damaged to 1 HP left. However, during shinken hissatsu, a sword stays in front, hence increasing the chances of losing him.