. >> reporter: police arrested ryuichi komi on suspicion of dragging shota and fleeing the scene.is said to be a longtime friend of the driver of the car that caused the collision. prior to the accident, the two are believed to have visited pubs and restaurants and were heading to another one. an acquaintance of komi said he enjoyed the excitement of driving. >> translator: i remember him dying his hair blond. he and his friends were speeding with motorcycles and cars all night as if they were racing. >> reporter: authorities have quoted komi as saying that he drank a jug of beer before the accident. he told them he ran away from the site because he didn't have additional insurance. they say he has admitted his involvement in the case, but has denied the charge of hit-and-run. mitsuko nishikawa, nhk world. >>> it's time now to get a check of the weather. people in many areas of japan are dealing with the rainy season and those in southern regions are getting hit hard. mai shoji joins us from the latest. >> well, as you know the rainy season is very important for the country, espec