Sol: Enchantment' (hereafter 'Sol') is a content system where you consume Nine to boost your stats and ultimately acquire specific equipment. Following the major overhaul of the research system in the July 22 (Wed) patch, many Inheritors have been looking into it as a way to improve their specs beyond Epic Skills. While Unique Level 1 research doesn't require much Nine, Unique Level 2 and Epic research require more than triple the amount, making careful decision-making essential.

In this guide, we will break down which research should be prioritized and compare the efficiency of Damage versus Weapon Damage.

▶ Summary of the July 22 (Wed) Research System Overhaul [Link]

First, we conducted a simple comparison between Damage and Weapon Damage. To clearly identify stat increases, we tested this at a lower spec range. Basic Attack and Gale Shot were measured by averaging values over 5 minutes each, while DPM was measured based on the use of Flare Shot, Gale Shot II, and Mystic Bolt. Please note that because this was tested at a lower spec range than that of typical Inheritors and over a short period, actual efficiency may vary.

For Basic Attacks, the difference between Damage and Weapon Damage was not very significant. However, for Skill Damage, the gap was substantial. Damage showed nearly double the increase compared to the same numerical value of Weapon Damage. Consequently, it showed nearly triple the efficiency in total DPM. Notably, Weapon Damage calculations also resulted in a relatively larger variance between minimum and maximum values.

You can obtain Weapon Damage through Unique research and Damage through Epic research. While the numbers may look identical, assuming Damage is three times as efficient as Weapon Damage, the difference in actual performance is quite significant.

Since research progress increases by 0–5 points based on probability, the values aren't intuitive, so we calculated them manually. On average, it takes about 8.89 attempts to reach Level 1 for a Unique weapon. In terms of Nine, this costs an average of 4.54 million Nine.

Epic research costs three times as much as Unique research, but because the success rate is lower, it actually requires more than triple the cost. Reaching Level 1 in Epic research takes an average of 10.16 attempts, costing an average of 15.88 million Nine.

As a result, Unique Level 1 research remains more cost-effective than Epic research, but the situation changes for Unique Level 2. With 8.89 attempts and an expected cost of about 13.6 million Nine, it is only about 2 million Nine cheaper than Epic research. However, due to the stat efficiency mentioned earlier, the actual applied damage efficiency results in a threefold gap.

In conclusion, we recommend proceeding in the order of Unique Level 1, Epic Level 1, and then Unique Level 2. Unless you are a top-tier player, we suggest considering Epic Level 1 research as your current stopping point.