Yes, I know Ren is not an SSR, but she's an SR with better defense than any SSR, so that makes her an SSR you can get as an SR.
Level 100 affection stats (Bonuses from affection, do not include base stats) :
Speed : 300
HP : 8000
Attack : 700
Defense : 8400
Block Chance : 0
Guard Break Rate : 12%
Damage Rate : 5%
Damage Imm Rate : 5%
Critical : 0
Defense Power : 0
Critical Defense Rate : 12%
Critical Power : 0
My Ren is currently a 5star, level 72, full skilled up girl with the following stats :
Initiative : 466
HP : 35K
Attack : 7.5K
Defense : 11.4K
2021-01-07 A-A-B-D
is there any Battle Soul with a broken Speed count like Ren's broken Defense? or perhaps someone with a broken Attack count? I know my Lu Wu at Love for Life 20 has over 1K attack, but that doesn't feel broken
What are your guys thoughts on Kasumi Hattori? I’m currently at 5 stars with her and gave her some boosts and she’s at level 40 and working on upgrading her kusarigama with the nirvanas. Should I continue to invest in her or just focus on my SR and SSR in my party?
Focus more on your SRs and SSRs; the only R girl worth investing in later-on is Oda Sayoko. Its fine to spend a bit on Kasumi for the sake of progressing if she already happens to be one of your best chars, but expect to replace her.
Some perspective.
A 3 star SR (just about ANY 3 star SR) will blow your 5 star R out of the water.
A 3 star SSR (just about any 3 star SSR) will blow your SR out of the water.
I have a really leveled up R. Meng Ting.
Level 72
7 Stars
72 in all skills
Date level Blue 11
Equip : all green 1 (the only unboosted stuff)
Spirit Power : Mind 46, Strength 45, Technique 45
Her stats are this :
Battle Power : 41,950
Attack : 4790
HP : 28226
Defense : 2482
Init : 228
My 3 star Chen Li SSR (not the most powerful SSR by any means) is more powerful... BP 45,965 (both BP's are without IOTs on either of them), Chen's dating level is Purple 10, 3 skills at 72, level 72, equipment level 40 or 45.
So, with minimum stars, same level, skills upgraded to same level, and only equip/dating increased on Chen Li, she's got 5K more BP.
My main SSR (Ashikaga Mako) is also 72, 5 stars, 5 skills at 72, equip level 65, and dating maxed, is around 80K BP (84,144, but has about 4K in IOT boosts). So, the same effort on SR/SSR will net you MUCH more in the way of BP.
I only have Meng boosted because I'm at the point in the game where I have left over resources and boost my SRs/Rs out of boredom while I wait to draw new/more SSR shards.