Ryoma's Infernal Map

What I found useful was having a good DC defensive unit like Tiki (adult or young should work), a fast blue tome unit (I used Ishtar) a brave bow with deathblow (BLYN for me) and a dancer (axura for me but it was more to manipulate Ryoma to the right instead of down)

Beat it using:
Swordhart-DC vantage set
Reinhardt-normal build
Blue Olwen-Blarblade+ and life and death desperation build
Green Olwen-usual set

I'll be honest. This map can be quite annoying.
It took me about 3-4 tries using this team.
I can probably show a video if you want. But that's if you have the units and want to replicate what I did.

If you can show me what your barracks looks like-I can probably put up a team for you.

Get on Youtube and watch Omni H's Setsuna Destroys series. Cheap, reliable, and easy to fine tune even if you don't have the exact same team. Bless that guy.

used classic gravity/wrath/dazzle combo/double savage blow genny with PAazura for buffs and flying azura for dancing, and Bcordelia for drawback.( only brought her just in case ryoma was a problem)
all i did was chip damage them to where they cant push far enough to kill the dancers, drawback genny so she doesnt get ganked, and dance to let genny chip some more or get out

Triple Ward Armour- Grima(M), W!Tharja, LA!Hector. And the healer Lachesis.

I did Horse Emblem with LA!Roy (DB3 + Brave Bow+), LA!Lilina (Gronnblade+), Elise (just for healing), and Xander (standard Fury + QR).

It's quite expensive and I don't think it should be replicated unless you already heavily invested in such a team. One thing I found really helpful was giving the -Blade tome user the Blazing AOE special to one-round the Ridersbane+ Lancer (which negated the buffs from Gronnblade) that spawns in the bottom left and give the Brave Bow user Swordbreaker.

In true fashion, Xander finished off Ryoma--and it was absolutely glorious.

Check out Phoenixmaster's video. He usually does f2p friendly video on how to beat maps.

I beat the map using Reinhardt, P.Azura, Grima and Effie.
Reinhardt has the mobility to move around the map and nuke most units and with P.Azura only dancing not fighting. Grima and Effie(with DC) tanked many units and hard countered them. Both have ward armor with swap.

Be extra wary of Ryoma because his special is already ready to proc once the stage begins and his guidance skill is always there to place armor and infantry units near him as he moves close to you.

I used dragon emblem with A.Tiki, Nowi, Fae, and Ninian to provide fortify dragons and dance. If you can KO Ryoma as soon as possible, the better your chances because his guidance can make quick work of your units if you don't plan your positioning ahead.

Main flier team:
NY!Camilla - takes care of the swords
F!Grima - bait
Camilla - Goad/Drive buff support
S!Camilla - Raven-TA-Iote for anti-colorless, takes care of the armor

I used Robin M, Tharja, Nino and PA! Azura. Robin mainly tanked all of the reds and colorless due to his triangle adept. Blade tomes were self-explanatory with PA! Azura. I picked off the lance on turn 1 and baited the bow fighter with robin, then just played it out normally after that.