Since 2016 Endo experiments with letters in his pieces. But he does not want to use already existing formulas, he sees letters as a form of a puzzle in which all shapes and lines get lost.

The consequence of this approach is a form of controlled chaos and sometimes he includes human shapes or faces in it. This has been a significant stepping stone on the way to the large pieces he was creating with increasingly complex structures and color patterns. And like many other former graffiti writers, Endo came to his unique style via deconstruction of letters.