A rooftop chapel in Tokyo is on an evangelical mission, spreading the word with fire, brimstone, levity -- and food -- to a flock of 200 homeless people every Sunday morning.

Services at Tokyo Aisen Christ Church, which sits atop a former inn in the Kudan district of Chiyoda Ward, seem much more energetic or inflammatory compared with most Christian churches in Japan: preachers shake their fists, jump in excitement and crack jokes as they entertain their congregation, some of whom come from as far away as Ueno Park in Taito Ward.

The flock responds by shouting amen and singing hymns louder and louder over the course of the service. Afterward, all are served a bowl of beef and kimchi.