You "Bet" cha

Bet - can ML seduce a woman set to be FL's husband's concubine

Bet - Can playboy ML seduce prude female.

Bet - can he seduce a naive girl.

Bet - to make nerdy female classmate fall for him in 30 days

Bet - to see who will marry first by age 35

Bet - Find a boyfriend before graduation

Bet - to make restaurant successful during the allotted time he will have to marry guy she bet with

Bet - If FL & ML get into same university, she will carry his schoolbag for a year

Bet - Whomever recovers all the stolen ATM money first gets to keep their job

Wager - winner of arm wrestling matches

Wager - if one of his friends hook him up w/ his crush he will cover their rent 

Bet - who can seduce married woman

ML bets FL she can't charm a prince kinda guy into loving her

As adults - If tree blooms leads will date
As HS students - If ML gets 1st on midterm they will date & if FL 1st ML has to call her big sis

ML bets that what he had w/Anna the AI doll was love & he won't fall for new doll.  Dr bets that love w/ AI not possible & he will repeat same cheap declaration of love for new doll.

ML bets he can get 10,000 demon bounty if he loses he will give up his alchemy.  ML2 bets sober demon alcohol if he loses.

ML believes humans corruptible/greedy & FL believes they are innately good.  FL picks 4 people & 1 dog for ML to try to corrupt with his wishes.
If FL wins -ML's brother gets to kill ML as God wishes for ML not bowing to humanity
If ML wins - ML gets to kill FL to exact revenge for 938 yr prior wish

ML3 makes bet w/his friends he can make FL fall for him