In Indonesian teen lit novels, the lifestyle of teenage girls can be interpreted from their way and style of communication, namely the way and style of using language. From the many means of selfdisclosure as anevidence of the very distinctive existence of teenager is the language. For teenager, language is not just a communication tool serving to achieve understanding, but also as a symbol of identity: education, social status, economic status, hobby, groups, communities, and social environment. In a teenage social environment, the language determines the process, type, and form of interaction-communication that affects the acceptability or social arbitrariness. As a result, each individual teenager strives to adjust his or her use of "gaul" (slang) language to achieve the acceptability.

Manga is the name for comics originating from Japan. As a form of literary work, many still consider this type of literary work as cheap literature. Therefore, through this research, the writer will see how manga, considered cheap literature, can be a very effective learning media, especially those related to environmental themes. The object of study of this research is the manga Nausicaa : Of The Valley Of The Wind by Hayao Miyazaki. Meanwhile, this object itself will be studied using the concept of reading comics and the approach of ecocriticism. Through these concepts and approaches, it can be seen that manga media will make readers more interested in these literary works and can quickly grasp the moral messages contained in work. It can be concluded that this media is a very effective educational medium to convey moral messages to readers.