In Your Fantasy

The song is composed of "heavy synth beats" and combines both singing and rapping from Ateez. The lyrics find them tempting one using their sexual attractiveness.

Marty of The Honey Pop remarked "We would sit and talk about 'In Your Fantasy' lyrics, but then we'd have to mention every single line in it. Ateez made sure we'll be losing it every second of that song, and honestly, we applaud them for the success. Focus? Absolutely lost, and at the same time, entirely on them and 'In Your Fantasy.' In fact, we were so distracted (can you blame us?) that we almost didn't think about how the song fits into their lore." Maria Mata of Melodic described the song as "creating a soundscape that draws you into their temptation. The repetitive rhythm of the song feels purposeful, almost like a siren song with the clear intention to seduce; the blend of cutthroat rapping, powerful vocals and sultry whispers conjures up Ateez's spell." She added, "The track's tone has been sharply set, with daring words that constantly tease the listener. In a way, 'In Your Fantasy' is both bold and mysterious, never shying away from seduction, but leaving us thirsting for much more. It is an invitation to let go of all inhibitions and give in to pleasure, like being slowly lured into the dark side; there's a push and pull in between restraint and debauchery that is as dizzying as it is intoxicating. The sexier concept, despite being in line with Ateez's explosive live performances, is also another step forward stylistically and creatively, a shift in tone that Atiny has rightfully loved and embraced."

• CD, single

1. "In Your Fantasy", 3:12

• CD, Yaeji version

1. "In Your Fantasy" (Yaeji version), 3:22

• CD, speed up version

1. "In Your Fantasy" (speed up version), 2:42

• CD, speed down version

1. "In Your Fantasy" (speed down version), 4:15

• Digital download and streaming, remixes

1. "In Your Fantasy" (Yaeji version), 3:22
2. "In Your Fantasy" (speed up version), 2:42
3. "In Your Fantasy" (speed down version), 4:15