Reveries in the Rain: the Reverse: 1999 endgame guide

Reveries in the Rain only unlocks after you clear the main story stage 5TH-20 "The Truth Seeker". It is not a single mode but three separate systems that share one material pool called Euphoria:

• Depths of Myth — dive through 5 sea zones, 10 stages each, getting harder the deeper you go.
• Isle of Echoes — raise defeated boss enemies into teammates called Myth Manifests, unlocked once Depths of Myth reaches 50m.
• Voyages of Volatility — a score-based challenge mode requiring 3 completely different teams across 3 stages.

All three are demanding, so don't try to tackle everything at once — read each part below carefully and pace your playtime. The fundamentals of Reality/Mental damage types and DPS + Survival + Support team-building (see the damage type guide and the beginner guide) still fully apply here — Reveries just asks you to multiply that knowledge across several teams at once.

Depths of Myth is split into 5 sea zones, 10 stages each, getting progressively deeper:

The hardest part sits at the end of each zone: the Transition Zone stage requires 3 completely different teams in the same attempt — you cannot carry your single strongest team through all 5 Transition Zones, you need genuine roster depth prepared before diving in.

Clear rewards include Clear Drop, Insight materials, and most importantly the 3 Euphoria materials used to raise Myth Manifests and to exchange in Voyages of Volatility: Keys of Thought, Sprouts of Fantasy, Seeds of Inspiration.

Isle of Echoes unlocks once Depths of Myth reaches 50m. This is where you "tame" bosses you've already defeated, turning them into teammates called Myth Manifests.

Each Myth Manifest has: its own Afflatus, a signature Manifest skill, a 3-tier passive line (unlocking at Level 1, 5, and 8), and a Mind Map — its own skill tree to customize its growth. The Manifest roster also rotates periodically, so which ones are strong or weak shifts over time — don't dump every resource into just one and neglect the rest.

The 6 current Myth Manifests, with well-matched characters (same Afflatus, easy to slot into the same team):

• Mountain Ghost (Plant) — pairs well with: Druvis III, Sotheby, Jessica, Marcus, Vila, Argus, Mercuria, Tuesday, Willow.
• Star of Misfortune (Star) — pairs well with: Lilya, Voyager, Matilda, 37, Windsong, Flutterpage, Barcarola.
• Operatic Reflection (Beast) — pairs well with: Spathodea, Isolde, J, Anjo Nala, Lopera.
• Ashen Beast (Mineral) — pairs well with: Eternity, Ms. NewBabel, Pickles, Jiu Niangzi, Semmelweis, J, Fatutu, Nautika, Sentinel.
• Primitive Urge (Spirit) — pairs well with: Melania, Shamane, Anjo Nala, Noire, Recoleta, Hissabeth, Moldir.
• Herald of the New Age (Intellect) — matching characters for this Manifest are not yet confirmed in our cross-checked sources; this entry will be filled in once solid data is available rather than guessed.

Voyages of Volatility is a score-based challenge mode with rules that change periodically. It has 3 stages, and each one requires a completely different team (Myth Manifest included) — you cannot reuse the same team across all 3 stages. Each stage also has 3 difficulty levels, with higher difficulty giving a bigger score multiplier.

Score-based reward milestones:

Each stage has a 40,000 score cap — no matter how hard you hit, a single stage cannot contribute more than 40,000 points to your total. The most important shortcut: clearing Normal difficulty on all 3 stages is already enough to hit the 60,000 milestone — the most valuable one since it converts into Euphoria materials, so you don't need to push the highest difficulty right away.

Since all three parts of Reveries in the Rain demand more than one team, prepare ahead of time instead of diving in and discovering you're short-handed:

• Euphoria serves double duty: it raises Myth Manifests in Isle of Echoes and is also the main reward from Voyages of Volatility. Since both sides consume and produce the same material, prioritize clearing Depths of Myth first to build up an initial Euphoria stock before pushing deep into Voyages of Volatility.
• Minimum roster checklist before touching a Transition Zone or Voyages of Volatility: at least 2 main DPS — one Reality, one Mental (see the damage type guide for why matching damage type to enemy defense matters so much), at least 2 Support/Survival units that can swap roles depending on the fight, and as much Afflatus coverage as you can manage so you're never caught without a counter against a Manifest or deep-sea enemy.
• Myth Manifests don't replace Arcanists — they're an addition, so you still need a solid Arcanist core behind them. Prioritize raising the Manifest that shares an Afflatus with the DPS you've invested the most in, so you can immediately make use of the matching-character lists above.
• Since the Manifest roster rotates, don't dump your entire Mind Map budget into just one from the start — spreading resources across 2-3 Manifests of different Afflatus gives you more flexibility when the next rotation hits.

In short: the fundamentals are still what you learned in the beginner guide and the damage type guide — Reveries in the Rain just triples the number of teams you need to prepare, it doesn't change the rules of the game.