Forest of Training: Mama

Info
You are able to access this quest through the Extra Isle. This a special quest where, at the cost of 0 stamina, you can test your crew and obtain the special Ship Kizaru's Cannonball.

In this quest you won't obtain any reward from the enemies.

FAQs

 * See Tips for New OPTC Players and Roadmap

Enemy numbers and attack patterns
Stage 8: Pre-emptively locks all Slasher characters' Specials for 10 turns.

Starting from Stage 11, since everything before it is easy. Should you have trouble with earlier stages, you should proceed further in the main story, level up your units and read some guides.