This game has it all:
+ rock solid definition of Tsundere
+ supa hacker with very questionable ethics
+ mad scientist son of a b****
+ a very cute girl with a **big** surprise
+ supa cool lab
+ maid Nyan-nyan cafe for cultured people
+ hacking CERN
+ TUTURU!
+ paper harem that will put you on a watch-list

It should be marked as educational, it will GREATLY TEACH you about Tsunderes, traps, cultured maid cafes, bulletin boards, time travel and most importantly not to microwave bananas!

--- if you're not into visual novels you should watch anime it is 10/10