Twintails is a special breed of show, you go into it saying "Yeah this is gonna be shit"; but come out saying "Shit that turned out to be fun enough that I want more". Twintails has a stupid plot but it is driven by the crazy characters.
Earth has been invaded by the Ultimegil a race of fetishistic creatures who all seek attributes to feed their desires but serve greater masters, the greatest of which enjoys Twintails (really long pigtails Miku Hatsune style). A hero rises up to face them with his equal, if not greater, obsession with this hair style:
Sōji Mitsuka
This guy is so obssessed that im pretty sure he is in a padded room imagining all of this. He is a cardboard cutout like every character in this show and honestly is the least funny character in the show as his lines can be summed up with "Twintails are awesome, fuck you aliens, my passion is greater, i have the biggest dick even when I am a girl because hair is amazing"
He spends his fighting time (and a few episodes) as a girl simply called Red (real original guys)
This girl is young looking and draws people who enjoy lolis (this show is full of them). She ends up garnering the attention of just about every person on earth and leaves her allies behind in popularity, proving that the world is a bunch of pedos and that flat is justice.
Speaking of; remember the fetish freaks from earlier? Well they attempted to answer the question of flat or plot and both died horrible deaths, but at least the flat lover was a tentacle monster.
Next in our main cast is Aika Tsube, a wonderful tall loli who has many cute moments in the show that mainly have to do with insecurities about her breast size and the many beatings of Twoearle.
This girl becomes Blue when she transforms, her outfit manages to be the most revealing of the trio and she manages to be the strongest physically. She is the ideal tomboy character and appeals to those who want a girl that can kick the ass of all the bullies at school because you don't feel like it (unless you are stronk like me and do 500 pushups a day at a minimum).
Finally we have a loli that actually is contending for a spot in my favorite characters because she peaks a meter deep in my heart. Erina Shindō, the class president with a submissive side and makes Kanbaru look tame.
She looks like serious jail bait and ends up needing to be saved for half the series. However, when she is given a chance, she proves to be a force to be reckoned with and is the only Tail to have a bust. She is Tail Yellow and will strip off her armor in a heartbeat only to become stronger.
Her biggest dream is to be Soji's pet, this is something that propelled this character so high in my esteem for her. This is because even if one can look objectively at something, they will inevitably enjoy something that brings them happiness and this is one of them. She is hilarious to watch and makes the show for me.
The Ultimegil are too numerous to count, but I guarantee that one of them has your fetish, go on, look on the wiki and find one.
The story is like a magical girl show (which I classify this as magical girl in every aspect, even down to the loli fan service) and thus is not too great. The Ultimegil are taken down in troves and the girls occasionally have to get over some self issue in order to take one down. The show just kind of ends with the big boss character being called back on a mission from her boss.
The appeal of the show is the fetishes you have and the comedy, because the characters are one dimensional and only have fetishistic value to drive them.
Ratings:
Story: 5 Really not a story at all
Animation: 7 Good animation all around, no real good moments except the ending theme which has great hair movement at points
Characters: 8 Again one dimensional but will appeal to each on a fetishistic and humorous level
Sound: 8 This show actually has a great sound track, with the opening and ending really standing out
Enjoyment: 8 I enjoyed this show because of the previously stated reasons, with Erina being the shining star for me
------------
Overall: 7.2 Feed those fetishes my friends, and stay strong.