Henjin Tantei Emu summary:

The strange adventures of two English friends who get themselves caught up in odd occurances. Rudy, the owner of a furniture store, comes to his friend Em, an eccentric freelance detective, with help for a situation he's roped himself into. Em makes things difficult, but the mystery is solved through his genius. Rudy can't shake his prices off though, and ends up relying on him for future shenanigans.