Love Making with a Busty Elf Makes Me Level Up Nonstop

The kingdom has fallen into the hands of the demon lord.
Monsters run rampant, and the downtrodden citizenry is suffering.
However, after one man's parents were killed, he became the hero the kingdom needed!

He starts thrashing monsters to level up and finds himself at level 30 already.
That's when he meets a famous magic swordsman, who gives him a word of advice.

"If you wish to level up quicker, go train with an elf who lives near the demon lord's castle."

Heeding his words of wisdom, our hero makes the journey and meets such an elf.
As the two sense the fatefulness of this encounter, they begin the secret training in earnest...

...but in the end, this is basically a story about a hero and an elf having lots of sex,
where the hero levels up every time he cums.
That wouldn't really work in an RPG, but it works in this manga.

A hero x elf sex tale for all lovers of giant breasts and asses (and fantasy.)