Нагло спиздил
https://www.reddit.com/r/Priconne/comments/kfjbjz/beginners_guide_strongest_1_and_2_star_characters/

While 3 stars character start stronger, most 1 and 2 stars characters are actually just equally as strong if not stronger. They just take more time and resources to develop. Here are the strongest 1 nd 2 star characters you should invest in.

1 Star Characters:

Yukari
Yukari has always been a top tier characters throughout the history of the game (still ranked SS in JP). She is in top 3 usage for every game mode except clan battle, and still very useful in clan battle. Her ability to heal, recover TP and buff the team magic resist make her one of the most versatile character for adventure, arena or boss fight.
=> Recommend investing dungeon coin
(She would receive a 6 version later which gives her team healing, but even without the 6 version she is still on of the strongest character)

Rima
Rima is one the best physical tank for Arena, while she cannot heal herself like Miyako, her ability to start from the backline make her an irreplaceable character. (She is still in almost every team in JP arena.) While Rima position is always in the front, she always enter the battlefied after the fight start. This allows your backline characters would position themselves closer to the enemy, which is essential to a lot of strategies in arena.
=> Can start farming shard in hard mode if you are interested in Arena
(She also have a 6 version later and becomes a brick wall, but same as Yukari, she is just as strong and unique even without it)

Yui
Yui provide team healing, which is rare and valuable in early game. While the amount of heal may seems lackluster in the beginning, she would heal more as you develop her as healing scale with magic attack.
=> Can start farming shard in hard mode
(She also has a 6 version later, I wonder why all the good 1 star characters have 6, while weaker 1 star like Misogi and Suzume don't)

2 Star Characters:

Kuuka
Kuuka is the best Magic tank in the game with taunt and great sustain. She is very valuable in the early game where tank is crucial, and she is viable in the arena for a long time.
=> Recommend investing Dungeon coin on her first

Miyako
Miyako is the best physical tank for adventure with her invincibility and decent sustain. She is very valuable in the early game where tank is crucial. She can even solo some dungeon boss in the right time frame. Very useful for a long time.
=> Recommend spending Princess Arena coin on her first

Tamaki
Her skills specifically target magic attacker. She is very useful in arena offence and defence by picking off Magic attacker and healer. Hide her behind physical tanks, you can form some of the toughest defensive team in arena.
=> Recommend using Arena coin on wither her or Monika
(would receive a 6 version later, after 6* version she can one shot every magic user except Maho)

Kaori
Kaori is the strongest physical DPS for clan battle in early months of the game, while she would eventually falls off. You can start raising her if you want to compete in a high rank clan.