Underworld Bell
"Underworld Bell" is ReLevel's Accessory. Basic HP is 71,100. The evolution destination is "True Underworld Bell", and the basic HP is 212,233,500.

| Category | Underworld Bell | True Underworld Bell |
|---|---|---|
| HP | 71,100 | 212,233,500 |
| Attack | 5,280 | 15,760,800 |
| Defense | 3,360 | 10,029,600 |
| Speed | 97,200 | 291,600 |
| Luck | 118,800 | 356,400 |
| Category | Contents |
|---|---|
| Conditions | After clearing map 4, you can evolve Equipment with MAX Mastery 1 times. |
| Mastery | When you Equipment and Victory a Combat, the base gain is Lv. 1 per 5 wins. EquipmentStat gain +2% per 1Level, reaching a 3× multiplier at Lv. 100. |
| Base cost | 900,000,000 G (before discount applied) |
| Carryover | Mastery, Devotion Rank, Skills, and evolution status will be inherited in Normal Rebirth. |
Netherworld Footsteps (stopping (enemy's CombatSpeed decrease))
Effect of Level that reached Equipped becomes effective.
| UnlockLevel | Effect |
|---|---|
| Lv. 31 | Souls Earned |
| Lv. 61 | Disarmament (decreases enemy's Attack) |
| Lv. 100 | Mark Collector |