When it comes to the early hits by Anzen Chitai（安全地帯）, there are the big three for me...two of which are "Wine-Red no Kokoro"（ワインレッドの心）and "Koi no Yokan"（恋の予感）. Sandwiched between those two hits is "Mayonaka Sugi no Koi" (Love Past Midnight) which is arguably the best title considering the atmospheric sound created by the band in those days.
Another reason that I put those three together is that I saw the official music videos for all of them in order on a VHS tape that I'd borrowed from one of my friends from Hong Kong. Unfortunately, I couldn't find the video for "Mayonaka Sugi no Koi" anywhere on YouTube or elsewhere and that's a pity since it may have been one of the first music videos in Japan to have used computer graphics (if anyone knows of a music video that came out earlier than 1984, please let me know). As I remember it, the video itself wasn't particularly all that mind-blowing; basically, it featured a dolled-up young lady sullenly playing an old-fashioned US pinball machine while Koji Tamaki（玉置浩二）and the guys were shown via matte in front of the bumpers. However what caught my eye was the CG version of the pinball game itself that was intercut with the live scenes....it keeps reminding me of that scene from "Star Trek II: The Wrath of Khan" (1982) when Kirk, Spock & McCoy were viewing the creation of a planet with the Genesis Device (itself "...cinema's first entirely computer-generated sequence...", according to Wikipedia). I'm not quite sure whether the video for "Mayonaka" has quite that stature in the realm of Japanese pop music but the pinball machine CG will always be the first thing I remember about it.