Kurama walked into the house to find his stepfather staring proudly at a metal device on the wall. "Isn't it great, Shuichi?" his stepfather asked. Kurama looked skeptically at the device, unsure of its function.
"Sure," Kurama answered half-heartedly. He went up to his room. That night, Kurama left the window unlocked as he always did, in case Hiei wanted to come in (usually due to needing bandages). It so happened that Hiei was injured that night in a fight, and decided to come in to take some medical supplies. It wasn't expected that a shrill siren would pierce the air as soon as he climbed in through the window.
"What in the world is that infernal noise!" Hiei gritted through his teeth. Kurama jumped out of bed, slammed the window shut, and pushed a protesting Hiei into the closet just before his mother burst into the room.
"Shuichi, honey, are you alright?" she asked.
"I'm fine kaasan. What is that noise?" Kurama asked.
"Oh, I thought you knew. It's the new burglar alarm we set up this morning. Anytime the alarm's on it will beep if someone enters or leaves the house."
"It must have been nothing," Kurama's stepfather said, standing next to Shiori in the hallway. "There are sometimes false alarms."
Kurama slumped back into bed after forcing a rather surly Hiei out of his closet and telling him to wait until the alarm was off to leave. Kurama could only hope this alarm thing wouldn't last.
A few days later, everything was quiet every night. Hiei had been scared back to the Makai by the alarm and was no longer going in and out the windows. However, Kurama himself was faced with his own need to sneak in and out of the house when he was called on by the Reikai Tantei to go apprehend (kill) some demons. Knowing the window wouldn't work, Kurama had enough sense to try the door. The alarm immediately went off, and Kurama rushed back to his room to fake ignorance. Koenma was not at all happy with his reason for being detained, and simply said, "Steal the alarm codes. You managed to steal the three priced artifacts from the spirit realm, surely you can steal a sequence of numbers from a human!"
Apparently, this was much harder than Koenma thought. Kurama had searched the entire house and everyone's laundry for the code, and had even called up the alarm company pretending to have forgotten the code, but he still couldn't find it! Kurama then proceeded to his next plan: get Hiei to use his jagan eye to read his stepfather's mind for the code. Hiei wasn't particularly happy to do this, and nothing came of it, because his stepfather never thought of the code.
Kurama's final plan was somewhat desperate. He plugged in various sequences of numbers to see if it was the alarm code under the cover of darkness. He never got the correct combination, but his human family had little sleep those nights with the alarm going off constantly.
One morning, his stepfather said, "I'm getting tired of this alarm business. Maybe we should call the company to have it uninstalled."
Kurama nodded enthusiastically (though not too much, he couldn't arouse suspicion) and answered with the rest of his family, "Yes, we should."
The alarm was removed the next day. Kurama walked off to school in high spirits. His spirits fell, however, when he arrived home to find another alarm company installing a new alarm system. How was he going to sneak in and out now?