Indeed To-Love-Ru had 3 seasons, and probaly more (in the anime). Spoilers for who haven't seen it but those picture from ^ are spoilers more then mine. The anime starts off with 2 girls, The Deviluke and the Dreamgirl, as it expands the devilukes become 3. Lala, Momo, Nene. The dreamgirl being Haruna. Season 2 comes out with a 2 gender Alien, male and female. The female being a popular singer. Can't remember when even his sister started to fall for Riko. Don't forget darkness and the sister of her. Maybe even her mother, the docter. So many girls that fall for Riko. Or should I say, Riko falls for so many girls