I just started playing around yesterday and haven't used any of these yet so I'm just wondering which 2 characters to use my secret letters on. Please don't just tell me to choose who I want, but I certainly don't want Tabethe.
I've only been using Outsider and Rebecca, so I just want someone flexible who I can use on alot of game modes.
Same thing with nocturnal echoes since I haven't used my tries, I'm thinking between Psyche and Fushu. Whose an amazing character in general? So I can prioritize them.
Anyways, I'm excited for Zhiliu and Yuming, since I started for them. :) But I'm not aware of them lore wise, I just thought they look cool, and no gacha!
I'm unaware af btw, idk how any of these characters work.

LeonD77a
I wouldn't stop at i2 on rhythm. I'd i6 her as well. but you need more SLCs
Astrix
I recently picked up i6 Lisbell (free from Mystic Maze btw) and she's a really great all rounder, doing amazing numbers for both single and multiple targets She's also really easy and fun to play, being probably the only character TO ACTUALLY UTILIZE COMBO ATTACKS in an effective way.
From Nocturnal Echoes, Fushu would definitely be the best choice, as she's a universal support that can REGEN SANITY (incredibly useful for every single character).
skykaninchen
If you're not sure, you can save them for the character who really grabs your interest later as you play the story. The MC is more than capable of carrying you until you make up your mind.
Y01
I think you need to i2 Rythm before thinking of any others characters. I will render your farm easier. after that go for lady Nifle i6 & Rebecca i6 too. outsider i1 or i2 if you like assassin type gameplay.
all characters are great tabethe too cause she a good crowd controller for Lady Nifle or even Rebecca. personnaly I use her on combat partner for both.
I wish you good luck in your drop & you can have a character i6 btw 100 & 138 runs..
I got Becca i6 at 108 runs. Lady Nifle 130 runs.
wespark99
I agree with everyone here, I would just recommend to get i2 Rhythm first so that you can then use her to farm the letters for Nifle
Cloverful
Seconding the call on i6 Lady Nifle and Rhythm’s i2. While it may be a little difficult to maintain Rhythm’s ult without some investment, she and Rebecca are amazing for farming. Nifle is just great in all game modes.
RileyKate37
i6 Lady Nifle takes investment but is really good to have, i2 Rhythm is also really good to have for farming. Psyche is great at i2 but definitely takes investment, Fushu is a good healer to have tho and you’ll need the moon skill upgrade mats (which you get from Fushu’s boss) for a lot of your characters ☺️
Kezhou
Hello!🫶 Imo Lady Nifle, idk for a 2nd character lol. Cuz she's definitely one of the most flexible, you can use her in almost everything and do well, especially in mystic maze, she makes it so easy.