SLPM-80431 ちっぽけラルフの大冒険 体験版 コミックボンボン版
SLPM-80431 Chippoke Ralph no Daibouken Taikenban Comic Bonbon Version
As for all Comic BonBon Special discs, you had to fill in an application form that could be found in Comic BonBon magazines and send it back. All applicants got the hibaihin.
This is the most common of the 4 Comic BonBon discs.
It is a taikenban (demo) of Chippoke Ralph no Daibouken ("The Adventures of Little Ralph" in Occident). As an extra, a special character from Comic BonBon universe, Hero Hero Kun, joins and helps you on the field! The first 3 stages are entirely playable.