I first watched HxH around 2006/07 on tv, but never thought about making an ability. Last week I had First Aid class and something clicked, so I stopped paying attention to the instruction and started writing a nen ability. which is:

5 Senses Death Punch (五感死拳)

Nen Category: Manipulation

Description

5 Senses Death Punch is a Manipulation-type Nen ability that establishes an absolute mental link between the user and the target through the five human senses. Rather than forcing control through direct contact alone, the user must first ensure that their existence has been fully perceived by the target.

Once all five sensory conditions are fulfilled within the allotted time, a complete mental connection is established, allowing the user to seize absolute control over the target's mind.

While the ability is active, the target loses all autonomy and will obey any command issued by the user, regardless of their own will or intentions.

Activation Conditions

To activate the ability, the target must experience all five senses in relation to the user:

• Sight: The target must clearly see the user.
• Hearing: The target must hear the user's voice or any sound intentionally produced by them.
• Smell: The target must perceive the user's natural scent.
• Touch: Direct physical contact must occur between the user and the target.
• Taste: The target must ingest a substance originating from the user's body, such as blood, saliva, sweat, fat, or any other bodily fluid or bodily substance.

The moment the first condition is fulfilled, a 24-hour countdown begins.

Within this period, the user must complete the remaining four conditions. If all five conditions are not fulfilled before the countdown expires, all progress is lost and the process must begin again from the start.

The instant the fifth condition is satisfied, the manipulation activates automatically.

Effect

The duration of the manipulation is equal to the remaining time on the original 24-hour countdown that began when the first condition was fulfilled.

The faster the user completes all five conditions, the longer they retain control over the target.

Examples:

• If all five conditions are completed in 30 minutes, the user gains approximately 23 hours and 30 minutes of absolute control.
• If they are completed after 23 hours, only 1 hour of manipulation remains.

There is no predefined limit to the number of targets that can be manipulated simultaneously, provided that each target's five conditions are fulfilled within their own individual 24-hour time limit.

Strengths

• Grants absolute control over the target's mind for the duration of the effect.
• Highly effective for infiltration, espionage, interrogation, and covert operations.
• Exceptionally powerful against opponents who are unaware of the ability's activation conditions.

Weaknesses

• Requires careful planning and preparation, making it poorly suited for direct combat.
• The Taste condition is typically the most difficult to fulfill.
• If the target understands how the ability works, they can deliberately prevent one or more conditions from being completed, rendering the ability ineffective.
• Failure to fulfill all five conditions within the initial 24-hour window resets all progress.