"Sir, imperial troops have been spotted by the border guards crossing into our territory. The fire signal has been sent." One of the King's men informs him of the atrocious breach of power the Emperor had ordered, and while he was more of a peaceful ruler, tolerance against the tyrant next door isn't something he would take lightly.
"Inform my personal guard and bring me my grimoire. We shall depart immediately to stop his troops from wreaking havoc on our people at all costs!" The King, with his blue robes and long white-blue hair strands, orders his men to prepare for battle while he himself ties his neck bow better since it has gotten a little off course.
'It seems like that kid still hasn't learned his lesson after the last war we won against them,' thought the Romaritime King as he prepared for battle by practicing his rune spells in mid-air, which were alone the size of a small car and he did it with so much ease it would be laughable to say he was not a prodigy.
'Perhaps I should march on his beloved Empire and humiliate their royal family for always disrespecting mine. I am capable enough to destroy that pathetic magic clan, but I would rather not use violence, for that is the lowest form of intelligence and self-control.' The Romatitime King thought to himself that as his spell finished, the entire kingdom would end up covered with clouds in an instant.
"Here's your grimoire, sire, and the royal guard is outside waiting for you now; they're all very eager to go with you." The loyal servant says while handing a large book to the King, which is nearly the size of his entire chest, but it surprisingly weighs nothing for the King as the grimoire quickly begins floating near him.
"Thank you, Alex. Please inform the Queen about my leave and ensure she doesn't step out of line while I am not here. I know her tendencies to abuse her power, so keep that in check for me." The servant bows to The King, who, seconds later, walks outside of his castle, where his beautiful rose garden and guards are waiting for him.
The attire of the Romaritime King would not be considered battle-ready by many, but as you might've already guessed, it was all just for comfort as he wasn't a physical fighter but a mage and a capable one at that. A heavy piece of armor would prove useless for someone like him.
Besides, if anything ever got too close to hurt him, then he would have bigger problems than a lack of armor to worry bout. That's how powerful the Romaritime king is.
The King's body wasn't skinny despite the lack of physical battle combat, which was quite the opposite. He didn't need to train the body; he did anyway since various spells required an insane level of rune precision, something someone without the proper muscle control wouldn't be able to cast.
Why not use his power to take over the Empire as he very well could? The answer was simple: in the King's mind, war was too devastating, no matter how easy it might be for one of the sides. People will suffer on the other side of the border, so keeping things peaceful is more merciful.
Besides, using one's overwhelming power doesn't leave you alone in this world, and the King knew all too well. Soon, other kingdoms and nations would see him as a threat or even try their luck against him, and that would only bring pain to his people, so he would rather just keep the borders tight and eliminate any breaches.
It's a pretty noble view of the world, one where people only respect strength and violent takeovers everywhere. It would only be a matter of time before his hand would be forced into war once again against the Empire, for the last war wasn't enough to teach the Emperor that he shouldn't mess with Romaritime.