FTISLAND releases single ”Theory of Happiness” today (5th)...Starting their first journey of the year

The band "FTISLAND" is coming back with their first digital single of the year. "FTISLAND" will release their first digital single "Theory of
"Theory of Happiness" is a Korean translation of the title song of the 11th Japanese single "Shiawase Theory".
The song features a story that is reminiscent of the original, told through FTISLAND's hard rock sound and emotional strings.
"FTestination" is a combination of "FTISLAND" and "Destination", and represents the music that FTISLAND aims for in 2025.
The release of "Theory of Happiness" marks the departure point of that journey.
Meanwhile, FTISLAND's digital single "Theory of
"Happiness" can be listened to on various music STREAM sites from 6 p.m. today (5th).