Noxia

SAfter generations of development, Hell is almost no different from modern Earth.

Wish power is settled based on the summoner's satisfaction (more satisfaction equals more wish power).

Horns can grow mainly with sufficient nutrition and can be nourished by wish power. They also grow with age (but wish power obtained must first be handed over uniformly; to obtain wish power, one must buy it themselves).

Signing a contract allows unlimited summoning without magic power loss near the summoner, and provides a continuous supply of wish power to aid growth or sell for money (the contract allows the contracted demon to keep 80% of wish power).

Magic power amount is based on horn length—longer horns mean more magic power.

Magic power quality is determined by horn size—larger and thicker horns indicate better quality. Quality affects what can be done; for example, poor quality might only create a breeze, while high quality can choose to create strong winds or even gales.

Demon age: Under 1000 years is growth phase, 1000–3000 years is maturity phase, 3000–6500 years is wing-transformation phase (as the name suggests, the period when demon wings grow), after 6500 years is basically complete form. Demon appearance basically stops changing around 200 years old.

The consumption and requirements of various magic circles for summoning demons are different. Lower-level magic circles: Demons summoned by this kind of magic circle are usually weaker and cannot handle very troublesome tasks. The advantage is that there is almost no cost. Mid-level magic circles: Demons summoned by this kind of magic circle are usually quite powerful and can fulfill most requirements. High-level magic circles: Demons summoned by this kind of magic circle are very strong among demons. They can not only complete tasks but also do them with high quality (for example, if a flood or earthquake is needed in a certain area, they can accomplish it).

Willpower: The acquisition of willpower is calculated based on the difficulty and satisfaction of completed requests (difficulty accounts for 65% and satisfaction for 35%). The willpower from a contract is determined by the human’s own willpower—the higher the willpower, the more willpower is generated. Ordinary people only produce about 3–5 units of willpower per day (in fact, this is slightly less than the willpower obtained by directly fulfilling a wish, but it is stable and rarely deducted). One unit of willpower can be exchanged in hell for about 3 days' living expenses. For most wishes from low-level summons (such as finding things or conjuring small objects), usually only 1–2 units of willpower can be obtained. Sexual activity can also generate a fairly decent amount of willpower (about 5–20 points and with low difficulty), but demons usually won’t take such wishes (demons also have a sense of chastity), unless a contract has already been signed (because the government agency takes too high a share). The amount of willpower obtained from other wishes varies.

Summoning: Most demons summoned are dispatched through a unified agency designated by the hell government. Each time they return, 80% of the willpower they gain is collected, and the remaining 20% is kept by the demon.

Humans need to consume Mental strength to summon demons. Ordinary people can only sustain 1–3 low-level ritual summons. Intermediate ritual summons require a capability equivalent to summoning a low-level ritual 200 times per day. High-level ritual summons are usually conducted by multiple people together (requiring enough Mental strength to summon a low-level ritual about 3000 times, which basically no one can achieve alone).

The growth of a demon's horns can rely on sufficient nutrition to naturally grow (normally, with proper nutrition, the horns will grow 2–3 cm in length and 0.6–1 cm in thickness every hundred years). They can also grow through 'willpower' (usually around 3,000 units of 'willpower' can grow the horns 1 cm in length and 0.3 cm in thickness). The longer a demon's horns, the more magical power they possess. The thicker the horns, the higher the quality of their magical power.

Having more magical power allows for multiple spell castings (approximately 2 cm of horn is enough to cast a spell once). Higher quality magical power increases the limit of spells that can be cast (for example, to kill a mosquito, horns only 0.1 cm thick might suffice, killing a fish may require around 1 cm thick horns, and to easily kill a human, at least 5 cm in diameter is needed).

Demon rankings:

• Low-level demons: horns between 1–20 cm in length and up to 5 cm in diameter. Both criteria must be met to advance to mid-level demons.
• Mid-level demons: horns 20–50 cm in length and 5–10 cm in diameter. Both criteria must be met to advance to high-level demons.
• High-level demons: horns over 50 cm in length and 10 cm in diameter are considered high-level demons.

A demon's horns basically stop growing after the growth period (1,000 years). Willpower is expensive, and most demons cannot afford it (growing 1 cm using willpower alone roughly requires a demon to have savings for over 20 years of survival).