Board Thread:General Discussion/@comment-13237238-20130724132657/@comment-3423279-20160412230005

When sealed, Kenkō to hāmu (Health and Harm) looks like a normal katana. Its hilt is dark green, while its sheath is black.

Shikai Kenkō to hāmu's Release Command is In sickness and in health. In Shikai the bladed half of Zanpakutou turns green while the other half turns orange.

Shikai Special Abilities: its blade can be used to provide medicinal treatment or afflict an individual with viruses or diseases at the blood level upon physical contact. The blade doesn't necessarily need to break skin, and its effects can be halted with enough reiatsu control on one's body or techniques like Blut Vene.

The healing aspects of Kenkō to hāmu allow those who are healed by it to be immune to the Zanpakutou's Bankai.

Bankai - Byōki no sekai (World of Sickness), upon releasing Bankai the surrounding area gains a green haze as long as it is released and the buildings themselves seem to succumb to illness.

Bankai Special Ability: Byōki no sekai is capable of causing many forms of sickness in one's opponents, but for the most powerful or deadly diseases it takes a fair amount of time to cultivate properly. If one has been chosen to not be afflicted by this Bankai's abilities a symbol appears near or on them. This process is either done by the Shikai's healing effects being used before releasing Bankai or the wielder's own will while activating the Bankai.

The only real "attack" it holds is Kami no mayaku (Poison of God), causes wings of an inky black liquid to form on the user's back for the duration of the technique and can be used to poison someone's core being in order to weaken them or, if they have been diseased enough, render an opponents power deadly to use or not function correctly. If using the Hollow Pills that Kisuke developed the Kami no mayaku technique can poison a Quincy with Hollow reiatsu and render them a mixed blood Quincy while tearing through their Blut defenses against blood based sickness with ease.

Despite the potential of Kami no mayaku using it renders the wielder vulnerable to the various illnesses that are in the area, and the technique can only be used once a certain amount or a certain potency of "sickness" is built up.

Using this Bankai is also incredibly dangerous for any allies that stumble upon its area of effect without having the symbol to be spared, and they will most likely be killed unless they can survive until either the Bankai is resealed, or somehow immunize themselves from the many illnesses attacking them all at once.

Unlike the Zanpakutou's Shikai form Byōki no sekai has no ability to heal, and is purely to torment and then kill others with disease.

(Gasp.. Breath Kaestal!!! Translated with Google.)