Support Ranks

[Toadette]

In this game, your character can team with other characters (something new in Fire Emblem), and they can create strong bonds through Support Ranks. They upgrade randomly, but you can increase the chances of it upgraded by pairing two characters together in battle.
Ranks:
C- Standard Rank.
B- Good Rank.
A- Great Rank.
S- Best Rank, but only available to characters of opposite gender. Usually those who get S rank together get Married, and become super strong together.

Also, guess who I just got to S rank!

Spoiler

 

[Yoshiman222]

They upgrade randomly, but you can increase the chances of it upgraded by pairing two characters together in battle.

I'm sure you upgrade them by paring them up in battles or having them interact with each other.
If they're not paired up, they still can earn by just standing beside the person while the other goes into combat.
Else, if you're impatient - use a Seed of Trust on them.
BTW - I see you've decided to become a Dark Mage...

I've got so many Rank C's with my guys. I've only aimed at trying to get some at Rank S, though.
Mine I've gotten were Chrom and Sumia (The game forces it due to the story, thankfully since they had Rank B at the time), and also got my character and Lissa to Rank S, and also "accidentally" getting Sully and Stahl to rank S as well (because they were only useful whenever I paired them up before)

 

[Toadette]

They upgrade randomly, but you can increase the chances of it upgraded by pairing two characters together in battle.

I'm sure you upgrade them by paring them up in battles or having them interact with each other.
If they're not paired up, they still can earn by just standing beside the person while the other goes into combat.
Else, if you're impatient - use a Seed of Trust on them.
BTW - I see you've decided to become a Dark Mage...

I've got so many Rank C's with my guys. I've only aimed at trying to get some at Rank S, though.
Mine I've gotten were Chrom and Sumia (The game forces it due to the story, thankfully since they had Rank B at the time), and also got my character and Lissa to Rank S, and also "accidentally" getting Sully and Stahl to rank S as well (because they were only useful whenever I paired them up before)

Everyone gets Chrom and Sumia together, but in my game, Chrom married Sully.
I really love AvatarxLon'qu though, their baby is super strong.