hentai in kanji

A change in form, state, ecology, etc. In particular, when an insect or the like transitions from a larva to an adult, it changes its appearance and structure significantly.
In plants, the roots, stems, leaves, etc., change from their original shape and take on a significantly different form. The leaves become thorns.
Or a phenomenon in which one crystal structure changes to another when the temperature is raised or lowered.

An expression that refers to a person with perverted and abnormal sexual preferences (perverted libido). It probably contains nuances of swearing.

An expression used in the sense of a taste or direction that is far from the general sense. It is sometimes used with a positive connotation.

The term ‘hentai’ has become established as a term that refers to anime for adults in Japan and adult games that are drawn in an anime style.