Hiiragi Yuki VEC-615 (This appears to be a title or heading, possibly related to a sexual encounter with a seductive single mother who moved to the apartment next door.)

The new neighbor is a beautiful single mother who recently divorced. A few days later, seeing Yuki being questioned by her ex-husband, Sakamoto immediately steps in to protect her. "Thank you so much for your help. I'm so scared... Could you stay with me for a while?" Because of this unexpected encounter, a subtle affection begins to develop between Sakamoto and Yuki…