The Ruins of Lost Time (忘却の遺跡 Bōkyaku no Iseki) are ruins that form a submarine path between Zemeth Island and the Mythos Path, which itself connects the Quatera and Canaan Island.
Near the end of the ruins, Adol Christin finds the second piece of the Mirror of Zeme. After he picks it up, Sera appears and summons Ud-Meiyu, leading to a boss fight.
Enemies[]
| Image | Name | Stats | Description |
|---|---|---|---|
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Gadoc | LV: 22 HP: 90/163/207 Str: 142 Def: 137 Luck: 94 Gold: 20 Exp: 225 |
Gadoc hops around like a spring making it hard to hit. Use Sword Magic attacks to hit the target. Drops:  
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Zenus | LV: 22 HP: 63/82/101 Str: 144 Def: 154 Luck: 115 Gold: 40 Exp: 450 |
Zenus is a stationary beam firing device. Jump over the beam or Adol will be knocked back. Drops: 
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Sarion | LV: 23 HP: 98/158/214 Str: 151 Def: 151 Luck: 97 Gold: 20 Exp: 235 |
Sarion is a murder machine and will aggressively chase Adol. Its sickle is quite strong. Drops:
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Gila | LV: 24 HP: 80/112/144 Str: 151 Def: 146 Luck: 125 Gold: 20 Exp: 245 |
Gila fires fireballs from afar. Chasing them can be difficult since they float above the ground. Drops:
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Gaetoil | LV: 24 HP: 48/82/110 Str: 141 Def: 99 Luck: 102 Gold: 20 Exp: 245 |
The Gaetoil have tough defense. Sword Skills and Magic are best at cracking their defensive shell. Drops: 
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Zecross | LV: 25 HP: 99/129/158 Str: 156 Def: 167 Luck: 105 Gold: 20 Exp: 254 |
Zecross launches two energy rings. The returning rings cause damage, so be careful. Drops:
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Viddun | LV: 25 HP: 198/337/445 Str: 145 Def: 145 Luck: 105 Gold: 20 Exp: 254 |
Viddun only appears in one special room protecting a rare treasure. Drops:
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| HP: Normal/Hard/Nightmare Descriptions taken from the PSP version of Ys VI, as the PC version does not have a bestiary. | |||
| full list -edit | |||
Sub-Bosses[]
| Image | Name | Stats | Description |
|---|---|---|---|
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Majunun | LV: 60 HP: 7610/8371/9132 Str: 338 Def: 321 Luck: 306 Gold: 400 Exp: 605 |
Guards a precious item deep in the Ruins of Amnesia. Possibly the strongest monster in the game. Regular techniques will probably not be enough against this cute but terrifying beast. Drops: 
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| HP: Normal/Hard/Nightmare Descriptions taken from the PSP version of Ys VI, as the PC version does not have a bestiary. | |||
| full list -edit | |||
Bosses[]
| Image | Name | Stats | Description |
|---|---|---|---|
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Ud-Meiyu | LV: 27 HP: 800/1360/1920 Str: 165 Def: 175 Luck: 50 Gold: 0 Exp: 6222 |
The Guardian of the Cradle - Ud-Meiyu Ud-Meiyu is hard to attack while it jumps around. Attack immediately after it lands or use Sword Magic. |
| HP: Normal/Hard/Nightmare Descriptions taken from the PSP version of Ys VI, as the PC version does not have a bestiary. | |||
| full list -edit | |||