In Lipstick Adventure, the player takes the role of Gorou, a young Japanese private detective. One day, a wealthy and powerful old man contacts him and asks him to find a box which - according to him - contained a family treasure. The young detective thinks that fortune has finally smiled to him, but when his pretty girlfriend Otomi disappears, he realizes that the mystery is bigger than he thought...
It's a mix of great plot and humor setting standards for many years to come. That's actually a revolutionary game and because of that it had a great number of sequels.
So we play as detective Gorou and investigate disappearance of some box with heirloom. But there's also high school girl Mami who is a member of school girl detective club who lives next door and accompanies us. The heirloom was easy to find, but on return the office was in chaos.
Game's well remembered because the scenario was made by creator of elf studio in next 1989. Despite embracing interactive adventure genre, story has a great tempo, lots of humor and overall comparatively easy flags to trigger as well as main decisions being done only at the very end.
Why is this game revolutionary?
1. It's the first game that I know that used the contemporary opening with scene shots sequences and astonishing musical theme.
2. It's the first original game that actually empathized charm of characters rather than plot. Seeing a woman walking side by side with the main hero the whole game was a novely itself.
3. It was the first erotic game where erotic content did not play a big role but rather was an element in the plot. And not having an erotic scene with Mami was a nonsense in bishoujo game.
4. Game had gallery collection inside the game called "lipstick".
The game has only one huge shortcoming - pc-98 version is not hookable by any means which makes it off limits for English auditory.