Handsome Ship? Chapter 18 - Fire Emblem Engage Anything Goes Maddening LTC

Chapter 18 cleared in 1 turn, leading to 37 turns so far in this maddening LTC by ‪@keb4007‬ and me. This is the first clear in the run that has 100% chance of success, but it won't be the last.

It seems that Citrinne can still kill the boss here without taking a spirit dust. She only needs 55ATK against 68HP/11RES, while in the video she has 47+5+3+2 = 57ATK when taking into account Momentum, Alear personal and Spur Attack. But Citrinne will need the dust in the next chapter anyways, so it's all good.

Reclassing:
Boucheron to Axe Cavalier
Alcryst promoted to his special class

Key unit levels:
Alear 2.12 (can vary as explained in the video; anything above 2 is good)
Chloe 10 lance flier / 4 wyvern / 8 sword griffin / 5.79 lance griffin
Ivy 9.22
Kagetsu 8.49
Panette 5.08
Citrinne 3.00
Hortensia 3.27

Blacksmith: none

Skill inheritance:
Citrinne inherit Momentum (one adept book used)
Kagetsu inherit Canter (one adept book used)
Hortensia inherit Canter
Seadall inherit Canter and Mentorship
Alcryst inherit Reposition

Cooking:
SPD+4 meal, for Kagetsu to double enemy sages after a level-up

Arena:
Kagetsu*3 (last one without lineage on purpose)

Staff Expenditures: none

Booster usage:
Citrinne: 1 dust (4 total)