I'm in Tokyo, keeping a useless girlfriend

When he opened his eyes again, Ito You had arrived in a strange island country.I am unfamiliar with the place, but fortunately I have the system to accompany me.[Pour a glass of water for your girlfriend and get a 500 yen reward.][Give your girlfriend a massage and get a 5000 yen reward.][Cook a meal for your girlfriend and get the reward of "Mastery of Cooking Skills".][Washing clothes for your girlfriend will reward you with +1 stamina.]Ito You, who is still single, fell into deep thought as he looked at the task given by the system."So, where's your girlfriend?"