Re: (Nutaku) Milenium War Aigis (English Version)
well, stray does have a (flimsy) advantage of being the only male archer.
I'd use two min costed bronze archers before Stray. Assuming you're (un)lucky enough to CR Stray... let's say once, at max level after CC, he does 303 damage per shot for 13 cost. Meanwhile, One Ars and one Wilfred at min cost together cost 10. Their attacks added together equals 374 damage. Even if someone were crazy enough to 100% trust Stray, he still only does 357.
So in conclusion:
The resources to level, CC, CR, beer grind, and max level Stray yields an archer doing 357 for 13 cost.
The resources to level two bronze archers to 40 and max CR them yields a combined attack of 374 for 10 cost.
Edit: As a fun comparison note for same-rarity archers:
Bella, our unreleased loli catgirl archer, at 50CC60 with 100% affection does 423 damage per shot
Claire, our unreleased loli mechanic archer, at 50CC60 with 100% affection does 398 damage per shot without her Attack up III skill running