Maletas translates to "suitcases". While it might seem like an everyday word, its use in this song is particularly poignant and creates a vivid image.
Kany García sings, "Desde que te me fuiste sin maletas" (Since you left me without suitcases). This phrase powerfully conveys a sudden, unexpected, and perhaps permanent departure, implying that the person left without any intention of returning or even packing for a journey, making the absence feel more abrupt and final.
Kany García and Abel Pintos sing a really emotional duet in "Aquí" about the pain of losing someone you love. The lyrics describe counting the seconds since loneliness arrived, ever since this person left on a one-way trip, as Kany sings, "Desde que te me fuiste sin maletas, Un viaje que es de ida y nada más" [Since you left without suitcases, a journey that is one-way and nothing more]. It's clear this departure was sudden and unexpected, leaving the singer longing for their return.
The chorus is a heartfelt plea for the person to "Vuelve" [Come back], because there's still a kiss pending and the singer isn't ready to lose them. They imagine how much easier life would be if the person were "Aquí" [Here], saying, "Darías azules de gris, que nublan mi mundo" [You would give blues to gray, that cloud my world]. It's a beautiful way of saying this person brought color and clarity to their life. The song is all about that deep ache of absence and the desperate wish for a loved one to return and make things right again.