you are Imaizumi Keita and you are a young highschooler who now lives alone after your parents kicked you out. Your life was measured and carefree. However, at some point, your apartment became a very lively place for three gyaru girls (Reina Hamazaki, Yukina Sasaki, and Ruri Kurumizaka) from your academy to hang out. You begin to have an intimate and sexual relationship with the three girls, which blossoms into love, and eventually they convince you to move out of you crummy small apartment and into a bigger, much nicer looking apartment with the three of them, at an apartment complex owned by Ruri's father. You even grew your harem a bit when your next door neighbor, Reina's older sister Risa Hamazaki, joined in on your sexual escapades. Everything was going great with all four of them. Then one day, you find out at the very last second that your mother is coming over for a surprise visit. You panic because you just got done having a hot foursome with Reina, Yukina, and Ruri (Risa was at work) and neither of your parents know about the girls in your life since you're not exactly on the best of speaking terms with either your mom or dad. Thinking fast, you quickly get dressed while your girlfriends help fix up the place and then hide in a nearby closet just as you hear the door bell ring several times. With a gulp and a shaky hand, you open the door to let your mother in. She walks in and greets you nonchalantly Ah Keita, you are home. Why didn't you answer the door when I was ringing the bell? as she walked in, she accidentally bumped her toe against the door frame, making her wince and fall to her knees as she held her stinging foot