Anime Memes: the harsh reality of leveling up

After letting Mr Bunny head-butt Maple in the stomach for an hour... a momentary distraction causes Mr Bunny's unfortunate demise.

1 hour = 6 Turns.
1 Turn = 60 Rounds.

Mr Bunny head-butted Maple's abs for 360 attacks only to come to a sad end when he impacted her Greatshield which inflicts counter damage.

Apple Bunny
Hit Dice:            1/2* (Small)
Armor Class:     9
Move:                 90' (30')
Attack:                1 Head-butt
Damage:             1d4
No. Appearing: 1(1d100)
Save As:              Normal Human
Morale:               12
Treasure Type:  Special Bonus
Alignment:         Neutral
Experience:        6xp

This small, cute, Apple-coloured bunny has an apple-white fur covered body and apple-red coloured ears. Despite it's cute appearance it is agressive and relentless, attacking with its head-butt continuously until it or its opponent is dead.
Anyone taking Head-butts to the unarmoured abs for an hour (360 rounds) without dying gets a bonus 1hp for hardening up. This is a one-off reward bonus.