I remember watching Alfred J. Kwak on TV when I was a kid. This animation serie was different to others. Always sad things happened to little Alfred. But it was great. I saw this single on Amazon Japan and I ordered. It's a 8cm CD with just two tracks, in a kind of a wide box I never saw before but I suppose it's common in Japan.

約束だよ [Single]  by Megumi Hayashibara

Label: Polydor
CD (1997/3/5)
Run Time: 7 min

Track Listings:
1. 約束だよ(林原めぐみ)
2. ハッピー・ハッピー(同)