A bullied teenage boy wakes up in the future after going into cold sleep. His new high school is filled with nothing but girls, and more than a few of them seem to have an interest in him, especially his old teacher.
I'm not sure how much of 
Karen-san's words I believe,
Die Geschichte von Karen
klingt äußerst zwielichtig,
Aunque no sé cuánto creer
de lo que me cuenta Karen,
Aunque no sé cuánto creer
de lo que me cuenta Karen,
J’avais du mal à croire
ce que m’a raconté Karen,
Non so quanto ci sia di vero 
in ciò che mi dice Karen,
Não sei o quanto eu acredito
nas palavras da Karen-san,
Не знаю, все ли слова Карен правдивы,