an Internet cafe

上手い, 巧い: good at something, skillful / 美味い, 旨い, 甘い, 甘美い: delicious, tasty / 旨い: favorable, preferable, good / 旨い: profitable / (uncommon) 旨い: thoughtless, foolish, lackadaisical, slipshod, short-si...

闘技場: arena

spread of a disease / rampancy of the growth of vines / rampancy of a bad custom