(A2A) I wish it was possible to give a similarly exhaustive, widely applicable, easy-to-read answer for this topic like with the hair colors one, but... there is a bit too much going on with eyes in the anime world to sum up everything in a couple of neat and tidy paragaphs. read more
Eye shapes in anime generally don't mean much beyond telling you the drawing style of the main artists and/or the studio. However, some styles do use different eye styles for the different genders, so it does establish some sense of femininity/masculinity. read more
Henceforth, when answering the question such as “What do eye shapes mean in anime and manga”, it is necessary for me to keep things at a very general level, but still highlight the importances of the characteristics of the eye shapes. read more