This is published as an experiment for modeling ability and spatial perception of GPT6-Astra to rebuild a simple 2d scene in 3d world․ Copyright of the cover‚ the music and the chara design to MakuraSoft's Himawari no Kyoukai to Nagai Natsuyasumi․｜ What's done by myself within 3 hours˸ decide main scene‚ collect art materials‚ download unity 6＆do the unity auth（unity 6 is necessary to use unity cli‚ and you have to point out blender location to use blender cli）‚ use up ChatGPT plus 5 hour limit for one time （blender modeling‚ building unity scene‚ place chara‚ set up audio）‚ create unity project with vrc creator companion‚ migrate to unity 2022 by using generated custom unitypackage‚ adjust floor material‚ set skybox‚ adjust collider box‚ adjust spawn point‚ reinstall unity for vrc plugin error （Connection time out‚ config not found‚ balabalabala）‚ do the vrchat auth＆build＆upload