| Operation | Story |
| IS-4 Crack of Thunder |
Il Siracusano: Stagione delle Piogge Previous IS-3 Next IS-ST-2
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| There are two eternal truths under this sky: order and violence. <Blood Ledger> All enemies are boosted and Famiglia Silencer[sic] is summoned when Blood Debt is at max. | |
| Recommended level | Elite 1 Level 30 | ||
|---|---|---|---|
| Sanity | Drill Plan | EXP | LMD |
| 12 | 1 | 120 (144) | 120 (144) |
| Unit Limit | Initial DP | Life Points | Enemies |
| 8 | 15 | 3 | 21 |
| First clear | Regular |
|---|---|
3 Stars  3 Stars  50 | Guaranteed 12 Guaranteed  Rare  |
| Allies | Siracusan Civilian ×4 |
|---|---|
| Normal | Famiglia Soldier ×7, Famiglia Crossbowman ×8, Famiglia Intimidator ×2 |
| Elite | Famiglia Cleaner |
| Addendum | |
| A Famiglia Cleaner will be spawned whenever the Blood Ledger enters Asset Liquidation, which is excluded from the enemy counter. | |
| Recommended level | Elite 1 Level 30 | ||
|---|---|---|---|
| Sanity | Drill Plan | EXP | LMD |
| 12 | 1 | 120 (144) | 120 (144) |
| Unit Limit | Initial DP | Life Points | Enemies |
| 8 | 15 | 3 | 21 |
| First clear | Regular |
|---|---|
3 Stars | Guaranteed  |
| Extra | |
      | |
| Allies | Siracusan Civilian ×4 |
|---|---|
| Normal | Famiglia Soldier ×7, Famiglia Crossbowman ×8, Famiglia Intimidator ×2 |
| Elite | Famiglia Cleaner |
| Addendum | |
| A Famiglia Cleaner will be spawned whenever the Blood Ledger enters Asset Liquidation, which is excluded from the enemy counter. | |