11 titles recommended if you like Spice and Wolf: MERCHANT MEETS THE WISE WOLF
Spice and Wolf
Kino's Journey -the Beautiful World- the Animated Series
Tales of Wedding Rings
The Seven Deadly Sins: Four Knights of the Apocalypse
Berserk
Even Given the Worthless "Appraiser" Class, I'm Actually the Strongest
Fullmetal Alchemist: Brotherhood
Claymore
Bye Bye, Earth
Jack-of-All-Trades, Party of None
Sorcerous Stabber Orphen