Teens love/ティーンズラブ (TL) is a genre of erotic manga that's for female audiences mostly in late teenagers and 20s:

1. TL is different from shoujo manga, josei manga, and ladies comic. All of them (mostly) targets female audiences, but the focus is different. Compared to shoujo and josei manga, TL focuses more on erotic content, it is erotic/porn manga while shoujo and josei manga are not. Shoujo and josei manga may contain sexual contents, but they are not as explicit as TL and are not the focus of the manga.

2. TL manga is its own classification in Japan, similar to BL. There are TL manga magazines, Japanese digital manga stores usually has their own section of TL manga, and in manga apps TL manga usually has their own TL tag.

Having this genre in this website is helpful to distinguish erotic manga from general manga and hence useful when filtering or searching manga. Moreover, the number of TL manga has been increasing in the past of 5 years, including those that got official English translation translated.