Account ID : br9x20cop98a
1st lesson: Catgirl Neamhain
2nd lesson: Sorrowful Sonnet
3rd lesson: Timid Freesia
4th lesson: Night Selene
5th lesson: Blooming Erato
6th lesson: Dawn Persephone
7th lesson: Guardian Chang'e
Reason: I try to choose the child that I didn't have and 4 star, I haven't upgrade yet.
Do you have Mars (Tank Water)? If you have, use her and bring out every tank. In case you don't have Mars, use Dana with Epona or Hades.
For attacker, Eve is very good and choose fire attacker around 5 to 6 child such as Fire Bathory, Medb, Hestia, Allie, Morgan, Typhing or 4 Star Hecter, Neth, Yuna.
Your Healers are OK, Maat and Orora.
You should add Debuffer, guard breakdown type, as Jupiter, wood Bathory, Bikini Mona, Light werewolf, Wood Midas, 4 star Freesia, 4 Star Persiphone or 3 Star Tiamet. Bring out Lan Fei and Rita.
Your Hermes is OK. Change non fire attacker to Supporter, increase damage type, as wood newbie Mona, Fire Leda, Party Medb, Light Sitri, Pantheon, Verdel, 4 Star Melphomine, 3 Star Lisa. And Speed type, Water Change E, Naias, Neptune. If you use Neptune you can switch with Arora.
Put all attacker and all water child in back row, except Mars. Try to use fire child.
If you use Naias, use her as 1st Drive order. If you use Jupiter or Bikini Mona or Sitri or Freesia, use them as 3rd Drive order.
The good leader is Party Medb or Jupiter or Freesia or Melpominee.
Last thing, If your can't perform well, try to turn off Live 2D and use wolrd boss speed just X1.
Hope you success in world boss and enjoy this game.
First thing, You should upgrade your Mars (Water Tank) as much as you can.
Tank 1-2 : Mars if your can't protect your front line, add Dana or Hades or Epona.
Healer 1-2 : use Maat if she can't heal your team well, add Syring (Wood Healer).
Attacker 5-7 : use Morgan, Fire Davi, Allie, Typhing, Fire Bathory, Neth, Medb and Eve.
Debuffer 5 : Fire Demeter, Maiden Werewolf, Bathory, Bikini Mona, Freesia. If you can upgrade Midas, use him.
Supporter 5 : Ganesha, Party Medb, Hermes, Naias, Lisa 3 star, Melphominee.
Leader : Ganesha.
Drive : 1. Naias, 2. Bikini Mona and 3 Ganesha. use just 3 order.
Try upgrade low stat child. And I hope it can help you. Enjoy the game.