still not sure, but need to evolved to 3rd form to transform to ssr chara unlock gw weapon, so i just assume need to change element too....but just for safety measures....dont do anything to them until further notice
You have to upgrade the shop first. I recommend using the SR mushroom summon girl in order to increase chance of rare encounter. All the weapons drop from rare encounters in the game. Mithra anima drops from mithra in chapter 28. Costed me about 45 1/2 ap pots to finish this lol. Afterwards there is 3 more stages of upgrading your weapon. Then it is believed you get your ssr char. I added what I know to the guide, will keep adding stuff as things get revealed.
wind dagger - chapter 1 家出したみぃちゃん rabbit wind spear - chapter 3 悪徳ブローカー harp fire axe - chapter 5 旅の商人からの依頼 golem fire spear - chapter 7 依頼主の勘違い elemental water staff - chapter 9 水辺の魔物 mermaid water gun - chapter 10 おいしい珊瑚 crab earth fist - chapter 13 美味しい匂い mushroom earth dagger - chapter 16 置き去りにされたもの rock light gun - chapter 17 親の心、子知らず soldier light fists - chapter 19 部屋の掃除 vase dark spear - chapter 21 リンゴ農家の反撃 flower dark staff - chapter 23 思い出を探しに water sword - chapter 1-4 or 4-3 earth staff - chapter 1-4 or 4-3 mithra anima - chapter 28
I actually got all of them with like 12 half ap pots and under 2 hours. Was using double treasure hunt with double rare spawn summon. But 5 mithra animas costed me like 20 pots and alot of time.
Also this gw weapon character grind is too insane. Its probably better to wait and see skills first.
Mithra is definitely the rarest drop, luckily I spammed it back in the day and have some leftovers(the summon is bad, but the staff is ok). And I don't need to see the skills, the girls are reason enough.