お隣さん母娘と甘々ハーレムライフ～真壁さんちと淫悦パラダイス～

The protagonist, Yasuhira Sasamoto, was looking forward to his father's one-month business trip overseas.
The timing of the trip was fortunate — it started right after summer vacation began.
He thought spending summer vacation abroad would be a valuable experience.
However, as the vacation approached, he became increasingly anxious about language barriers, cultural differences, and safety concerns. Eventually, he grew so nervous that he threw a tantrum and declared he didn't want to go at all.