
Youthful Fantasy
This Arc's class only fits certain characters. Based on independent community sources, the Liquid class currently includes:
List based on community sources, not necessarily the full current roster — a character absent here simply has no confirmed source yet, not necessarily an exclusion.
"Black Tome"
Increases Break Intensity by 10%.
Seals Arc: Black Tome with two chains by default. Unleashes 1 chain each time any character on the team casts a Support Skill. Makes Arc: Black Tome available when all two chains are unleashed.
Arc: Black Tome — Summons the Black Tome for 30s. Designates an enemy every 30s. Increases the wearer's Chaos DMG dealt to designated enemies by -20%. Deals Chaos DMG equal to — of the wearer's ATK to designated enemies when they take Break Damage.
| Stars | Value 1 | Value 2 | Value 3 | Value 4 | Value 5 |
|---|---|---|---|---|---|
| ★ | 10% | 30 | 30 | -20% | — |
| ★★ | 12.5% | 30 | 30 | -25% | — |
| ★★★ | 15% | 30 | 30 | -30% | — |
| ★★★★ | 17.5% | 30 | 30 | -35% | — |
| ★★★★★ | 20% | 30 | 30 | -40% | — |
Values follow the official per-star curve from game data. Each column is one effect slot.
Why This Arc Is Strong (or Weak)
Upgrade Priority
Community tier: A
This Arc is worth upgrading once your team composition is locked in and its trigger conditions are consistently met — it comes with extra conditions, but performs close to top-tier when those are satisfied.
How to Get This Arc
Take the 4-star commission The Book of Post-Adolescence in the New Herland district, follow it to a construction site, ride the elevator to the rooftop, then defeat the boss Black Tome to receive the Arc.
Two Community Tips
If you defeat the required boss but forget to pick up the Arc, the game automatically mails it to your inbox afterward. Most of these fights only require winning once in single-player mode, so picking the lowest difficulty and quitting right after the win (no stamina cost) is enough.
Youthful Fantasy base stats
| Max level | ATK | ATK Bonus |
|---|---|---|
| 20 | 0 | 12% |
| 30 | 26 | 15% |
| 40 | 51 | 18% |
| 50 | 77 | 21% |
| 60 | 102 | 24% |
| 70 | 128 | 27% |
| 80 | 154 | 30% |
Level-1 values from client data (before gear).
Youthful Fantasy ascension materials
| Stage | Max level | Materials |
|---|---|---|
| 0 | 20 | — |
| 1 | 30 | Liquid Dream Trial Kit ×4 Suspended Delusions ×4 Beetle Coin ×20,000 |
| 2 | 40 | Liquid Dream Trial Kit ×10 Suspended Delusions ×10 Beetle Coin ×40,000 |
| 3 | 50 | Liquid Dream Travel Kit ×6 Yearning Delusions ×6 Beetle Coin ×60,000 |
| 4 | 60 | Liquid Dream Travel Kit ×12 Yearning Delusions ×12 Beetle Coin ×80,000 |
| 5 | 70 | Liquid Dream Can ×6 Transcendent Delusions ×6 Beetle Coin ×100,000 |
| 6 | 80 | Liquid Dream Can ×12 Transcendent Delusions ×12 Beetle Coin ×120,000 |
Card Art

Lore
"Secret"… The moment it was recorded, it was already known by everyone.







