Tada Masaki is your average 18-year-old high school boy who lives a very normal life. His life is boring and nothing exciting ever happens to him. However, since young, his neighbor, Aragaki Reika has always taken care of him as his parents are often late out at work.
Even till now, Aragaki always takes care of the house and Tada during the weekends when their parents are out working. How will Tada be able to resist Aragaki who is stunningly beautiful for her age?