There will be cute little blurbs at the beginning of each chapter about Frerin growing up and then it will switch to present day.

Frerin's two years old when he first speaks. It's not a word, more babbling than anything, but the family still celebrates and Frerin stands around repeating, "Frodo!" with a joyous grin. He bathes in the attention, not quite knowing where he got the collection of letters. His parents wonder too, but Frerin toddles around quite a bit and he could have heard it anywhere.

He's a tiny lad, much smaller than Thorin was at that age, and Thrain is concerned. He doesn't seem to grow as fast as the other dwarflings and his curly blond hair sprouts quicker than he does.

...

They're standing on the balcony overlooking Dale when the vision hits him hard enough to make him collapse. Frerin should be used to them by now, little bits and pieces of the future stampeding through his mind like a pack of wild horses, but this one feels different, somehow. Off.

He stands atop the edge of a cliff looking outwards. Before him is a glorious view - The dark sprawl of Mirkwood with Erebor rising resplendent in the distance. Thorin stands in front of him smiling warmly. He looks regal, draped in kingly furs, but he has a cut across his face and leaves hang from his tangled hair. Something stirs inside of Frerin at the sight, a warmth spreading all the way to his toes.

His body... It's different, smaller He wears no armor and has no shoes. But he has no time to ponder on the change as Thorin steps forward and wraps his strong arms around Frerin in a great hug. Frerin can't help but look deeply into his brother's kind, dark eyes and smile. The warm feeling rises to his chest and explodes when Thorin unexpectedly leans down and graces his lips with a tender kiss.

"Bilbo."

...

Frerin wakes, blushing, to the worried faces of his brother and sister.

"'Rin, yaw'right?" Dis asks, steadying him as he tries to stand.

"Was it another vision?" Thorin inquires briskly, "Did you see something again?"

Frerin shakes his head, swaying dizzily, "No, I- uh. I don't feel so good. I think I need to lay down." He can't get the feeling of Thorin's lips on his out of his mind, and it's freaking him out. He shouldn't be thinking about his brother like that. At all.

Dis leads him down to his rooms and lays him softy on his fur-covered bed.

"There ya go." She hums, "Yah get some rest now, then ya can tell us what that was all about."

Frerin nods sleepily and driftts away from the world.