Travels back in time, fucks the ancestor of the girl you had a crush on, you had a crush on your grandgrandgrandgrandgrand....daughter. Based.
It's a pretty easy target for a 'big political figure who could have done more'. Probably the only one who gets the same level is stalin and only due to...
Don't worry, we will have like 10-20 chapters build around this drama as the kohai slowly understands that she is actually in love, but then we will still spend way too much time on a problem that just requires knowing how to speak.