If anyone wonders,
119 is the emergency number for medical emergencies, or in this case, an ambulance. In Japan, it is also used as the emergency number for the fire brigade.
1 However, in my country, the emergency number for the fire brigade is
113.
Fun fact: In my country, the suicide prevention center also uses
119. Unfortunately, this number cannot provide immediate assistance for suicide first aid, but you can always call an ambulance for the aftermath.
1 https://en.wikipedia.org/wiki/119_(emergency_telephone_number)#Japan