User blog comment:RottenBlock/System 1 Compilation, Part 6/@comment-40164738-20190829175648/@comment-40164738-20190830133439

Turns out I already found it at some point, had it in my collection. It's the PC88 version. Some older collection and the big neo-kobe set have it as well. Volume 2 seems to still be missing though. https://www35.zippyshare.com/v/NIrdWWVd/file.html

Also have two walkthroughs: http://h-english.net/retro/Lemonade.html or http://www013.upp.so-net.ne.jp/ymurakami/guide/champion.htm. For the second one just ctrl+f "ＬＥＭＯＮＡＤＥ創刊号" to get to that game. Seems to work fine, can't quite get past the copy protection/quiz dracula, probably pasted it wrong. Sadly the emulator I can use which allows for pasting of text has no save states, so if I make a mistake at the quiz I'll have to do it all over.

Did manage to complete the game using the 2nd walkthrough, first one doesn't differ much so it should work as well. One thing to note is to save before going into battle, ロード (load) and セーブ (save) are the commands.

Further info I found on Lemonade is that it was a diskmag published between December 1986 to March 1987, 2 issues in total. The mags were 200 and 250 pages respectively, atleast according to a few sources. The mags contents were apparently a bunch of comics? The disks were also available for the FM-7. The 2nd one also has disks included, but is much more akin to Zeta or Omega. Which means a bunch of smaller games instead of one main game.

One source states Champion Soft published it themselves, I can't actually find the source again because I copy pasted the wrong link. Nothing that important and I'll probably find it again if I look into some other titles.

A small extra I just found: the 2nd walkthrough page has a small section on lemonade Vol.2 and in it indicates that there was a game with the same contents called "女子高生の運動会" by "全日本同人バイヤー協会". Might be worth looking into. It'd be some version of the game at least.