FLCL, Denpa Onna to Seishun Otoko Recommendations
Both titles are coming of age stories featuring adolescent male protagonists who gradually change through time. Also feature eccentric female characters and lead female characters who refer to themselves as aliens. In contrast, FLCL is more whacky in nature and the story is faster paced.
UFO, surrealism and strange story/character
-Eccentric female claiming to be an alien.
-Certain scenes of awesomeness/nuttiness.
Fooly Cooly is a little more rapid, but both have their fair share of craziness, along with a colorful cast.
Both bizarre, comedic portraits of adolescence centered around a boy whose (presumably normal) older family members have recently gone overseas only to be replaced with a cast of eccentrics including a female lead who claims to be an alien.
Tempo is the most notable distinction between the two: Denpa Onna is reflective and character-focused whereas FLCL is explosive and exciting.