Netizens have come up with a theory regarding the most popular 3rd generation girl groups after comparing them through the 5th title songs that each group promoted. 

One post on an online community argued favoring the theory, 'The Law of the 5th Title Song within the Top Three 3rd Generation Girl Groups'. This theory suggested that all of the top three 3rd generation girl groups - TWICE, Red Velvet, and G-Friend - suffered from their all time low's during their 5th promotional tracks. See for yourselves below if you agree. 

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First, the theory looked at Red Velvet's promotions. After "Happiness", "Be Natural", "Ice Cream Cake", and "Dumb Dumb", the group's 5th promotional song came to "One of These Nights (July 7)", which the writer of the theory claimed was "the Red Velvet song with the worst music chart score ever". Supposedly, anti-fans of Red Velvet even call the song "Fail Month Fail Day". 

G-Friend, who debuted with "Glass Bead", then followed up with "Me Gustas Tu", "Rough", "NAVILLERA", and their 5th promotional song "Fingertip", was known for being the first girl group in history to record over 10,000,000 streamings on music charts with "Me Gustas Tu". The theory stated, however, that "after attempting a concept change, their song fell off the chart". 

Finally, the theory arrived at TWICE, whose 5th promotional song is their latest title track "Signal" after "Like OOH-AHH", "Cheer Up", "TT", and "Knock Knock". The song is currently receiving enormous backlash online, despite being composed by J.Y. Park. Compared to TWICE's other title tracks, "Signal" faces big competitors on music charts such as Unnies, Psy, IU, and more, and "may be the first TWICE song to fail at reaching 10,000,000 streamings", according to the writer of the theory. 

Other netizens commented about the theory, "You really can't deny the bad music chart scores in all of their 5th title songs", "Whoa, fascinating", "If you say it like that solely based on the music chart scores without considering the songs for their charms, it's true... but I personally like all of the [above mentioned 5th title songs]", "But everyone will only do better!", and more. 

What are you thoughts on the 'The Law of the 5th Title Song within the Top Three 3rd Generation Girl Groups'?