As Japan suffers another scorching summer, insurers see rapidly growing demand for heat-related illness coverage that boasts easiness and flexibility in contracts compared with traditional insurance products. Customers use smartphone apps to apply for the services, which even include single-day contracts for coverage during outdoor concerts and sporting events, for example. Already recording temperatures of more than 40 C in various locations in July, the Japan Meteorological Agency has issued alerts against heatstroke and heat exhaustion in many regions, urging people to stay indoors as much …