Probably the first real roadblock in this Lostbelt.
Contain both battles against Nezha in Section 10 with similar gimmicks but different winning conditions.
First battle:
You can win by either surviving her NP on turn 4, or breaking 2 of her HP bars.
I went with the latter option here just for the extra challenge.
Second battle:
You have to defeat her to win this time.
Similar to the first battle, she will have a set AI pattern for the first 4 turns.
On turn 5, she will remove all scripted buff and debuff on the field from both herself and your party, reduce your Servants' HP by 5000 and reduce her own HP to 1.
After this turn, her AI will return to normal.
Note:
Don't try to stun her for the first few turns, it will just delay her AI script to the next turn.
#fgo