Talismen

In a faraway jungle deep within Asia, there's a forgotten temple and... Okay! Who has heard of this before? Let's skip that part and get to the main dish.
My name is Jun and I really need to get a better family. There are four of us in my household; myself the youngest whose just staring my first year of high school, my older sister Haru who got married just last year, my mother Kyoko who run's her own bakery business that's gotten five star reviews from critics, and last but not least my dad who works as a renowned archaeologist who specializes in discovering old forgotten structure from olden times like pyramids, tombs, and temple where he finds interesting things like talisman's. Living with an archaeologist, you tend to know that there are all kinds of relics or tools that have certain uses or powers which is all just folklore or could be explained by science, am I right? So when my older sister, Haru, came to me suddenly with a talisman she found only talking about how she wanted to transfer her two month baby into me so she could go to a really important business trip with her anti-baby boss for three months and begged me to take her baby, I naturally didn't believe her and decided to humor her because of it. Now I've got a small baby growing in me and have to wait three whole months until my sister comes back from her trip. Is this karma for not believing her or does god just hate me?

This is set in Japan so I'll be sure to explain a few things about their culture for some of our ignorant readers so there's no confusion and pure enjoyment. I hope you enjoy