Sennight Inferno
七日ノ焔
★★★★★ 5★
Gun
Wonder
Corroding Lava
Gun
Wonder
Corroding Lava
Sennight Inferno in 10 seconds
Sennight Inferno is a 5★ weapon — Wonder.
Skill
Corroding Lava
Refine +0Increase Attack by 28.0%. For each Persona of a different attribute equipped, increase damage by 6.0%. Stacks up to 3 times. After knocking down a foe, decrease the target's Defense by 15.0% for 1 turn.
Refine +5 (max)Increase Attack by 46.7%. For each Persona of a different attribute equipped, increase damage by 12.0%. Stacks up to 3 times. After knocking down a foe, decrease the target's Defense by 30.0% for 1 turn.
Stats
| HP | ATK | DEF | |
|---|---|---|---|
| Level 1 | 172 | 48 | 32 |
| Level 80 (max breach) | 2,140 | 594 | 396 |
| Per level | +19.44 | +5.4 | +3.6 |
Bars compare against the strongest P5X weapon (799 ATK · 2,873 HP · 537 DEF at max level).
Breach & materials
| HP | ATK | DEF | Material | |
|---|---|---|---|---|
| Tier 1 | +61.71 | +17.14 | +11.43 | Blue Crystal ×5 |
| Tier 2 | +61.71 | +17.14 | +11.43 | Blue Crystal ×12 |
| Tier 3 | +61.71 | +17.14 | +11.43 | Purple Crystal ×6 |
| Tier 4 | +61.71 | +17.14 | +11.43 | Purple Crystal ×10 |
| Tier 5 | +61.71 | +17.14 | +11.43 | Purple Crystal ×18 |
| Tier 6 | +61.71 | +17.14 | +11.43 | Yellow Crystal ×12 |
| Tier 7 | +61.71 | +17.14 | +11.43 | Yellow Crystal ×24 |
Named breach-material table for every one of the 7 tiers (cross-checked against the official dump — community sources do not list this level of detail).
How to obtain
Palace exploration reward (50% map milestone)
Weapon mechanics (applies to every P5X weapon)
Weapons are hard-locked to one character — they cannot be swapped to another character.
Weapon level is SHARED: leveling up any one weapon raises the level of every other weapon owned by that same character, regardless of rarity. Level cap is 80, reached via 7 breach overclocks using crystals (Blue/Purple/Yellow).
Forging is NOT shared — each weapon forges independently. Even-numbered forge steps (0/2/4/6) need a duplicate of the exact same weapon; odd-numbered steps (1/3/5) accept any weapon of the same rarity.
Exclusive owner
More Wonder weapons
Frequently asked questions
Who wields Sennight Inferno in P5X?
Sennight Inferno is exclusively equipped by Wonder and cannot be transferred to another character.
How do I get Sennight Inferno?
Palace exploration reward (50% map milestone)
What materials does Sennight Inferno need to breach?
All 7 breach tiers to Lv.80 need 17× Blue Crystal, 34× Purple Crystal, 36× Yellow Crystal.
Is Sennight Inferno worth upgrading?
Weapon level is shared with every weapon owned by the same character (no extra cost there), but forging is per-weapon — worth it mainly if you actively use this character.