Isonade
Isonade is the second Guardian Spirit in Nioh and this one is in the shape of a giant, embroidered shark. It increased your Spirit base state by +1, which will allow you to unlock more of this spirit’s potential quicker. This may seem less important than increasing your health and damage earlier on, so having it as a base upgrade is handy. When you activate your Living Weapon ability, Isonade will give you a small 5% boost to your damage, along with a boost to your health and recovery abilities.
This power is best used when you are about to die and need a way to get back into the fight quickly. Consider Isonade more of a panic button than one you’d use to just finish off a tough boss or engage a group of enemies with. It’s powerful healing abilities allows you to easily turn the tide of a battle, so if you want a “second wind” then make sure to grab this Guardian Spirit in Nioh.