Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 16 - 16-80. God Keys

Zarah is nothing but a lowly runt in Howl Creek who is bullied relentlessly. She wants nothing more than to leave the oppressive pack. When it is revealed who her mate is—none other than her greatest bully, Alpha Damon—she is humiliated and rejected.She leaves for the human sector and lives her life with her son, only for the past to come knocking. Alpha Damon is back, and he wants his son.

I banished the protagonist.

Shit. If only I had transmigrated a short while before.

The eldest son of the assassin aristocrat Tuatha Dé.

The skill, experience, knowledge of the previous life, magic, all of which grows his power as an assassin.

Excellent assassins pass through. He was usually admired as the ideal lord, and behind it wielded a blade as an assassin aristocrat.

In this world, being a farmer is a noble profession.

To obtain the Zhang Xiaofan super ability, have no matter all sorts of grass, raise flower, you ‘ll became one big guy unconsciously.

At a dying grass, give it 60 points of life, and will live.

Villain holding a 100 years of Lingcao in front of Zhang Xiaofan show off in an ostentatious manner, conveniently give it a year. As a result of the tragedy, it degenerates into a ten rank grass, the villain be crying faint in the toilet.

- Description from Novelupdates