Big Sister Has to Keep It Up Today, Too

I have two younger brothers,

one is a tsundere, and the other is too rebellious.

After our father died, as the eldest daughter, I had no choice but to shoulder the burden of supporting our family,

working tirelessly and conscientiously.

But when I turned around,

the younger brothers I'd placed such high hopes on were fighting over our father's inheritance,

and it broke my heart.

After much reflection, I realized an older sister should act like an older sister.

It's time to let my brothers feel a love as solid as a mountain,

and expectations as deep as the sea.

Worlds featured:

Inuyasha, Heian-kyo (the setting of the Onmyoji game), Nura: Rise of the Yokai Clan, Natsume's Book of Friends, and Detective Conan.

Other notes:

(1) Characters may be severely out of character, and minor characters from the original works may be even more wildly changed.

(2) The female lead has no romance plot (if there is one, it's one-sided). The author doesn't have the guts to pair her with her favorite male characters.

(3) The original couples generally won't be broken up, but the plot will be thoroughly scrambled.

Theme: A deep bond between siblings that moves heaven and earth!