Fires an enormous cross-shaped projectile that pierces through every enemy in its path. The cross is far larger than the base Cross weapon — it blankets a wide column of the screen per shot, clearing grouped enemies in a single pass. Level scaling increases projectile size, damage, and fire rate.

Grand Cross has a non-standard acquisition: it is purchased from the Inlaid Library stage's patron or selected through certain arcana options, rather than dropping from the field. Its massive hitbox rewards area bonuses — Candelabrador's size boost makes each shot cover an even wider swath.

Max Grand Cross (Lv 8), hold Heaven Sword (the evolved form of Cross — requires Cross at max level + Clover), and open an elite-drop chest after 10:00 to trigger the union evolution into Arch Angle.

Getting Heaven Sword requires a parallel build: level Cross to max, hold Clover, and evolve it first. This means the full Arch Angle path uses up to three weapon slots (Grand Cross, Cross, and the evolved Heaven Sword), demanding careful slot management.

Arch Angle Effect

After union multiple cross-shaped light projectiles radiate in all directions at high speed — full-screen suppression power. Dense enemy waves and bosses alike take sustained high damage. Heaven Sword's crit bonus is incorporated into the evolved form, adding a crit layer to the all-direction output.

• Enormous hitbox clears dense enemy columns in one pass
• Area bonus passives directly scale with the large projectile size
• Post-union all-direction suppression is overwhelming
• Heaven Sword's crit bonus is absorbed into the final form

• Non-standard acquisition — Library stage or arcana selection required
• Union requires Heaven Sword — demands a parallel Cross + Clover build
• Two to three weapon slots consumed by the full evolution path
• Lower fire rate means periodic gaps between volleys

• Gennaro: extra projectile count adds cross shots per volley
• Imelda: +10% Growth speeds both Grand Cross and Cross to max
• Characters with crit bonuses: compound with Heaven Sword's crit effect

• Clover: needed for Heaven Sword evolution alongside max Cross — top priority
• Candelabrador: larger projectile size maximizes pierce coverage
• Spinach: +10% Might raises per-shot damage
• Bracer: higher speed extends each cross projectile's travel range

• IX Divine Bloodline: crit compounding with Arch Angle's all-direction output
• VII Seventh Trumpet: crit build multiplier that stacks with Heaven Sword's bonus

• Early (0–10 min): Level both Grand Cross and Cross in parallel. Secure Clover early to prepare for Heaven Sword.
• Mid (10–20 min): Max Cross + Clover → Heaven Sword first. Then max Grand Cross + Heaven Sword → Arch Angle. The two evolutions chain in sequence.
• Late (20+ min): With Arch Angle active and the Heaven Sword slot freed, bring in a complementary weapon. Add Candelabrador and Spinach to push coverage and damage.

Q: Where do I get Grand Cross?
A: Purchase it from the Inlaid Library stage's patron, or it may appear as an arcana selection option. It does not drop from regular field pickups.

Q: How do I get Heaven Sword?
A: Max Cross, hold Clover, and open an elite-drop chest. Both Cross and Clover must be secured — running them in parallel with Grand Cross is the full path to Arch Angle.

Q: What if I don't have enough weapon slots?
A: Three slots are needed at peak (Grand Cross, Cross, Heaven Sword). Plan the Library stage run around this constraint — slot priority is critical.