Fusion XP Calculator

Tier 1 (T1) are for Starter Units and units that requires 10 XP to level from Lv 1 to 2.

Tier 2 (T2) are for Sibyl Sisters and units that requires 15 XP to level from Lv 1 to 2.

Tier 3 (T3) are most rare summons that requires 21 XP to level from Lv1 to 2.