Senpai, Jitaku Keibiin no Koyou wa Ikaga desu ka?

Tama, a man known for his laziness, gets a message from Renafalt, an online friend he’s never met in real life. Renafalt asks if he wants to hire a home security guard. Assuming Renafalt is male, Tama meets someone at the designated spot carrying a red suitcase. To his surprise, the person is a tall, attractive woman with large breasts. She asks, “Ah...um...are you my senpai?” The story follows the unusual living arrangement that develops between Tama, who just wants to live in peace, and the girl, who has a quirky, comedic condition.