The setup
3+4! (2026)
It shares its release window with Street Fighter, so expect the two fanbases to be reacting side by side.
The theatrical release lands October 15, 2026.
Reactr / Trailer Reactions / 3+4!
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In Theaters · October 15, 2026
3+4!
Trailer Reactions
Fantasy · Science Fiction
Connects the years 1996 and 2026, featuring a time-travel storyline where member Nahyun finds a pager and travels back to 1996. A film featuring the girl group "AtHeart".
Free · no editing · camera or voice only · the clip is yours to post
The Trailer
The 3+4! trailer is here
Dropped September 22, 2026
Behind the camera
The history behind 3+4!
Titan Content is behind the production. Direction comes from Nam Tae-jin.
Meet the cast
Who you’ll see in the trailer
Nahyun, Arin and Michi lead the cast. Nahyun plays Self.
Nahyun
as Self
Arin
as Self
Michi
as Self
Katelyn
as Self
Aurora
as Self
Bome
as Self
Seohyeon
as Self
The reason to record this one
This trailer was made to be reacted to
Fantasy trailers sell a world in two minutes. The moment it clicks for you is the moment worth keeping.
Theatrical releases are won in the weeks before opening night, and trailer reactions are where that energy starts. Yours can be part of it.
Reactions on Reactr
Be one of the first to react
Reaction clips for 3+4! will appear here as Reactors share them. The Reactr recorder is free for creators: watch the trailer, record on camera or voice only, and the finished clip is yours to post on your own TikTok, Reels, or Shorts channel.
Record the first reaction →FAQ
3+4!: quick answers
How do I record a 3+4! trailer reaction?
Open the reaction recorder on your phone at reactr.film/studio/3-4, choose camera or voice only, and press record while the trailer plays. Reactr captures your reaction and gives you a share-ready clip when the trailer ends. It is free.
Do I have to be on camera?
No. Voice Reaction mode records your commentary with the microphone only: the camera stays off, no face is recorded, and you still get a share-ready clip for your channel.
When does 3+4! come out?
3+4! is scheduled to open in US theaters on October 15, 2026. Dates can shift, so check back for updates.
Who stars in 3+4!?
Nahyun, Arin, Michi, Katelyn and Aurora lead the cast, directed by Nam Tae-jin.
Is Reactr free?
Yes. Recording reaction clips on Reactr is free, with no paywall on the finished clip. You own your clip and can post it to TikTok, Reels, Shorts, or anywhere else. Reactr makes money from studios and sponsors, not from creators.
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Your first reaction only happens once
Watch the 3+4! trailer, hit record on camera or voice only, and the clip is yours to post.
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