[Touhou LostWord] vs L1 Shou DS - Lv120 clear! (Purple Heart Only)

Combat at 0:00. Character set-up at 2:35.
A lot of people around me are raving about Lady Byakuren at the moment. I kinda have certain feelings about her too... I'm actually doing a good job of resisting. It helps that Lady Mima and Lady Shinki are right there by my side to shield me from nefarious forces. Lady Yuyuko also keeps me replenished in headpats and lap pillows just in case.
Anyway, this stage shouldn't have taken as long as it did... but I did doubt myself from using Shinki for like an hour but she did the job I needed done. (She had to both be a nuke and provide at least 0.9 party SP T1.)
☆☆ Character Set-Up ☆☆
[LM1 Mima] 》-----《 [L80 Yuyuko]
[L80 Kaguya] 》-----《 [F1 Koishi]
[LR1 Shinki] 》-----《 [C3 Yuyuko]
LM1 Mima - 5* MLB - Purple Heart, Rank 4 - Agi +100, Yin ATK +100
L80 Kaguya - 5* MLB - Purple Heart, Rank 4 - Yin ATK +100, Yin DEF +100
LR1 Shinki - 5* MLB - Purple Heart, Rank 5 - Yang ATK +100
L80 Yuyuko - 1* LB0 - Purple Heart, Rank 4
F1 Koishi - 5* MLB - Purple Heart, Rank 4
C3 Yuyuko - 5* MLB - Purple Heart, Rank 4 - Agi +100, Yang ATK +100
To be frank, L80 Kaguya's enhances don't really matter that much for this comp. Neither do F1 Koishi's.
☆☆ Story Cards ☆☆
LM1 Mima - Yin Slice*, Yin Slice*, Yin Slice*, Yin Slice*, ESP
L80 Kaguya - Yin Hard*, Yin Hard*, Yin Hard*, Yin Hard*, Tenma Mountain Starfall
LR1 Shinki - Yang Slice*, Yang Slice*/Magician's Broom, Yang Slice*, Yang Slice*, MGD
L80 Yuyuko - n/a, n/a
F1 Koishi - Yang Hard*, Yang Hard*, Yang Hard*, Yang Hard*, Running Late
C3 Yuyuko - Yang Slice*, Yang Slice*, Yang Slice*, Yang Slice*, BSG
Notes:
~ Yang Slice = Yang ATK + Agility stat stick
~ Yang Hard = Yang ATK + Yang DEF stat stick
~ Yin Slice = Yin ATK + Agility stat stick
~ Yin Hard = Yin ATK + Yang DEF stat stick
~ Shinki's SC2 should probably be an agility-up card since she nukes next.
☆☆☆ Overview of Strat ☆☆☆
T1: Kaguya debuffs, Mima nukes
T2: Koishi debuffs, Shinki nukes
T3: Yuyuko debuffs, Yuyuko nukes
☆☆☆ Strat ☆☆☆
Turn 1:
LM1 Mima - Graze once, use skills 1-2-3, 3p LW
L80 Kaguya - Use skills 1-2-3, 3p LW
LR1 Shinki - Use skills 1-3, SC2 on anyone (preferably Shou)
Turn 2:
(Swap out Kaguya)
LM1 Mima - 3p Spread Shot/Focus Shot
F1 Koishi - Use skills 1-2-3, 1p LW
LR1 Shinki - 3p LW
Turn 3:
(Swap out Mima and Shinki)
L80 Yuyuko - Use skills 1-2-3, 2p Spread Shot
F1 Koishi - Spread Shot
C3 Yuyuko - Use skills 1-2-3, 3p LW