When Yuto was growing up, he loved Spirit Day. Starting in October, he and Lono would take out the usual Spirit Day decorations and decorate the house for when the little kids of Heartland City would visit their house for trick-or-treating. From the Kuriboh Jack-o-lantern to the stuffed zombie monsters, decorating the house was one of his favorite things to do.

So when Yuto started living with the Obsidians, he was rather…unimpressed with how they decorate for Spirit Day.

"ALRIGHT, EVERYONE," Orbital instructed, holding a clipboard. "REMEMBER TO PLACE THE SKELETON ANIMATRONICS TO THE RIGHT SIDE OF THE LAWN. AND PLEASE BE CAREFUL NOT TO DAMAGE THE HEDGES."

Yep, the countless robot maids were in charge of decorating the Obsidian household every Spirit Day. Sure the residence was smaller than a typical mansion yet bigger than a large house, but that wasn't an excuse for the Obsidians to let their robot maids handle all the work. So when he noticed the robot maids taking out Spirit Day decorations during breakfast, he had to ask about it.

"I beg your pardon?" Kameron asked.

"Sorry for asking," Yuto said. "But I had to find out why the robot maids are in charge of decorating the house for Spirit Day."

"We don't have time for that kind of stuff," Astra explained. "Us Obsidians already have quite a busy schedule, especially since Lulu now has daily therapy treatment."

"Because of the surgery?" Yuto asked.

"It's part of why I need physical therapy," Lulu clarified, briefly glancing at her wheelchair. "I feel bad about not being able to walk again, so mother and father want me to undergo special exercises to help me relearn how to walk."

"Our schedules are why we have robot maids in the first place," Shay added. "It's a lot easier for us than wasting time decorating the house."

But Yuto couldn't stand that kind of behavior. So later that day, before he headed to the family ballroom for dance lessons, he used his Duel Disk to call his cousin.

"You want me to do what?" Yuya asked.

"Bring over a box labeled 'Osaku Spirit Day Decorations' to the Obsidian residence," Yuto instructed. "It contains all the Spirit Day decorations I used to set up with mom."

"I would, but the Paradise Prep track team is training today," Yuya said. "What if I had one of my monsters drop off the box instead?"

"That will work," Yuto said. "Thanks Yuya."

"No problem," Yuya replied.

Later that day, while the Obsidians (and Yuto) were eating their lunch in the family dining room, Orbital entered carrying a box. "MASTER Y-YUTO, I HAVE RECEIVED A DELIVERY FROM SOMEONE WHO RESEMBLED THE MONSTER STARGAZER MAGICIAN," the head robo-butler reported.

Yuto's eyes widened in delight. "It's my old Spirit Day decorations," he explained.

Orbital peeked inside the box. "OH DEAR," he said. "THESE DECORATIONS APPEAR TO BE OLD AND CHEAP. SHALL I PROPERLY DISPOSE OF THEM?"

"No!" Yuto blurted out. But then he cleared his throat. "Please don't throw them out. Those decorations contain memories I had with my mom."

The Obsidians realized why Yuto wanted those decorations. "It's your first Spirit Day without her," Astra commented.

"Precisely," Yuto replied. "And after lunch, I want all of you to help me decorate the house with them."

"But Yuto, we're far too busy," Kameron said. "Don't you remember?"

"Of course," Yuto said. "But what about afterwards? We can still set up the decorations tonight."

"Tonight?" Shay repeated.

Yuto nodded in response. "Is that alright with you?"

"Of course, sweet knight," Lulu answered.

"Alright," Shay agreed.

"Well I suppose you are sort of part of this family," Astra said.

"Then it's settled," Kameron said. "Starting tonight, the Obsidians are going to…actually do housework."

And so, that evening, the Obsidians helped Yuto decorate the house for Spirit Day. Thankfully the robot maids were willing to help out, so it was a lot easier than they initially thought. Needless to say, this was going to be the first among many new Spirit Day traditions for the Obsidians.