>Travel back in time 12 years
>Bring newspaper clippings to prove it
>Somehow end up back in your body from that time, however
>Don't even bring back winning lotto numbers
>Use it to turn your teacher into a lolicon and seduce him into knocking you up and marrying you instead of another girl (of which, by the way, no school - even in Japan - is going to be keen on a teacher still fucking and knocking up a student that's 16; he'd almost certainly would lose his job if that happened and got out)
...Wh... What even...? Ignoring the fact that she discovered one of the holy grails of human technology/abilities... How? Why?