The present paper describes the AlALeR System, an Autonomous, Robust and Light Alignment System. Capable of aligning at the sentence level a French text and a Japanese one, the AlALeR System doesn't use any external tool, such as morphological analysers or dictionaries, contrary to existing methods. This system is characterized by a partial morphological analysis taking advantage of some peculiarities of japanese writing system, and by the transcription of loan words with a transducer.