I don't know how can you teach me how because I'm here in Philippines I'm try to find a way sending him a letter or search him in ward shinagawa but I can't find how
Use his name and the address posted above (1-chome-25-14 Togoshi, Shinagawa, Tokyo 142-0041 Japan). If he still lives in that neighbourhood, Japan Post will find him. If not, they'll return the letter to you.
How old was he in 1995? Do you know what Japanese company he was working for?
I suggest sending a letter by postal mail. Even if he's not there it might get forwarded to him. If it comes back to you you'll know for sure he's not at that address.
I suggest sending a letter by postal mail. Even if he's not there it might get forwarded to him. If it comes back to you you'll know for sure he's not at that address.