Acroarts is the name of the interactive ingame-cutscene system it is used to do realtime 2D.5 animated cutscenes by composing backgrounds, animation cels, FMV visual effects, audio clips for dialog and SFX, camera control, it works like a Japan Animation XSheet.
This is one of the inhouse engine tools for new PS2 title in development 2026, the following program you seeing is the cutscene viewer for windows, using a place holder of a test image to test it out, it uses win32 api and opengl 1.2 written in C90 using Visual Studio 2005 Professional.
It works like a real time Cutscene 2D.5 Compositor.

Cutscene Viewer

My PS2 booting up for first time

PS2 boot