This game is an old but good VN, it falls in the dating sim category where you upgrade your character stats, smart, sport etc and chases after some girls, there is a lot of different heroines to go after, i recommend going blind first and later use a guide to see what could be done because a few options are a bit hidden, don't give up if you end up alone in your first run, the art and ost are really nice with a strong 90s aesthetics Strongly recommend it especially as a first experience with the genre.
The game is not really good, the impact of your choices are very limited, your life is too short and feel rushed, it's end after high school which is stupid considering how fast your character grow up. There is better games elsewhere.
Your choice doesn't matter, despite the message when the game start, unforgivable for this kind of game. Very sad become sad become i was thinking TTG changed and was going to let me "build" the story. You be better reading a visual novel.