Time Stop School Vacation: I Came from the Future to Cum in the Classmates

Yuuya was a high school student with the ability to freeze time and walk through it.
It was a power he couldn't tell anyone about.
But while he was on his pre-graduation field trip with the school's cutest girls,
a time traveler from the future suddenly joined them... it was Yuuya as an adult!

His (future Yuuya's) mission was to violate the girls, everywhere.
Of course, nobody knew of his existence except himself (present Yuuya).
Future Yuuya froze time and came into girls at the fireworks
festival, the beach, the lodge, the morning exercise field...
when he was done, he dashed away and time unfroze, letting his sperm
seep deep into their wombs. During the time stop the girls'
not-yet-developed chests also could be transformed into full D-cups.

Why had his future self taken this terrible path?
Was present Yuuya destined to do the same?
A battle with himself begins.

13 CG base images, 67 total incl. variations
(Further text-free version for 148 grand total)