An Unusual Post-Study Session

My fellow reincarnator, friend, and guide, Cara Chauvestel, had a smile that looked like an AK fan having met Kalashnikov himself in person followed by obtaining his autograph.

Together with her younger twin, Yuna, they're both being served with cinnamon tea by Sasame in study room.

Besides us as the occupants, there's Suzu, Sophia, Anya and my cute younger adopted sister, Emma here served with same flavored tea by Alessia and Rhea.

"What do you mean this world has 23 weeks per month with 16 months for 1 year?" I asked once more for verification, trying not to freak out at the newfound information I haven't checked with my tablet.

'23 weeks = 1 month, 16 months = 1 year. I need to get my tablet to get the pattern later. I thought it's the same! How can I forget such common sense of checking the calendar the first place!'

Yuna smiled. "It is what it is, Caesar. When we were younger, Cara reacted the same."

"It's true." added Cara. "Just treat it as normal, there's nothing wrong with it."

"I guess so..." I said, accepting it slowly. "The conversion method will remain the same. So that makes my lesson for arithmetic concluded then, am I right?"

"Yep, well done and congratulations."

"Thank you." I thanked Cara and Yuna. "I still have a lot to learn."

"Okay, Mr. Future Adventurer." joked Cara. "If you need help, favor, and assistance, as long as it's in our power, do ask us."

"Understood. I'm counting on you, Cara-sensei, Yuna-sensei."

We laughed.

My cute 4-year-old brown-haired sister, Emma tugged my right sleeve. "Caesar-nii, can we play please? You promised us."

Emma MacMillan, she's my youngest sister who wants to spend time with me as family. Being her big brother, I spoil her a bit and give her my familial affection as I would from my past self to my younger siblings and cousins. With her teal eyes and brown hair, she's just that cute and adorable in a way I was reminded of Priscilla when I looked after her.

Smiling, I gave Emma a head pat. "A promise is a promise. Let's play."

Emma smiled brightly.

'House? I wonder how it'll work?' Looking at my other three sisters, Sophia, Anya, and Suzu, I thought for a second, they were looking at me intensively behind their act of consuming tea.

-

I was wrong.

The innocent game that started okay turned into more competitive after each of them took turns.

With first round of pretend play of normal couple with Emma to pretend play of boyfriend-girlfriend with Sophia's 2nd round, the game itself in next rounds became more intense and competitive to a point that I thought I became the MC of some stupid generic harem series with elements of drama on it.

It wasn't funny but it made me remember aspects of my former life in that similar scenario I handled fairly.

Whoever planted these weird ideas in the minds of my siblings or so I think, I'll give that person an isekai style helicopter ride for the attempt of ruining their innocence.

After the game ended with a surprise harem ending round, I gave them a piece of my mind about this game that was to say, play besides "Playing House."

Sophia pouted.

'Really, Sophia?' This girl, I'm so going to tease and tickle her later.