Since the YT clip has been deleted ages ago, I have replaced the clip with screencaptures. Hence the update.
Someone posted a short clip from his debut movie and debut everything, the movie called Hon no 5g (ほんの5g) made way back on 26.11.1988 from the database I found. Which means 22 years ago and so Masha was about 19 at that time. However, that clip has since been deleted. I have however plenty of screencaptures and since in this movie he is always
1. half naked
2. in short shorts
3. the scene and his debut begins with him rolling on the floor with a girl kissing his I suppose body since can't see much
4. him pouting
5. shirt is always not buttoned up, at all
you can say his debut was meant to show him as a young sex symbol. After all the hoo-haa about his amazing body in Ryoma-Den Episode 4, see the screencaptures to know why there was a near meltdown because of that episode. And I notice 3 rarities;
Screencaptures after Read More link.
Just to show it is really him, I included the credits part with his name in it. It is unnecessary to do so since he hardly changed. Yes, he was very young but the face is the same.