(I just imagine that a good way for them to bond is that they look out after their guildmates even though Marcus is pricklier and more critical but he wants them to be safe and alive even if he's more reticent to put it that way, so I kinda worked that in to the story there a bit)
He's a very good person, even if he's sometimes prickly, blunt, and reserved. His better nature tends to come through in spite of that But people he likes sees the nicer side much more. Not quite tsundere or kuudere, per se? But sort of adjacent and less tropey about it. Mirajane's kind and caring nature would've won him over, along with her intellect
You kind of gave me the perfect leeway to set up their pre-existing CR up to this point that could lead into something more intimate in the here and now if Marcus is willing to go for it.
Just got to the part in your character bio where you're explaining how his old guild had tried to send enforcers to coerce him and I was like. "ASDFGHJK JUST LIKE OTHER GUILDS ARE TRYING TO STEAL HIM FROM FAIRY TAIL!"
bakerstreet | Treat yo'self
being drop dead gorgeous doesn't hurt eitherI hope you got my gag tagI'm amused by the idea that they're sort of like the mom and dad of the guild given their respective ways of dealing with themAlso good thread opportunity, at some point, Mirajane and Marcus go Mama Bear/Papa Wolf on someone messing with their guildmates