Mysterious Cave

After hearing Anni's report, I hurriedly head toward the Great Waterfall direction.

Nearby the river not far from the waterfall, I spotted Anni and Anna's figures waiting for me patiently.

They have serious expressions plastered on their face and examining the surrounding area vigilantly.

Upon seeing me, they slightly eased their vigilance and bowed politely to me.

[Did you really find a suspicious place behind that waterfall?]

I dropped in front of them and candidly asked.

[Yes, when I and Anna investigating the waterfall, Anna finds a hidden cave behind the water curtain of the waterfall… but…]

Anni answered me unhesitatingly at the beginning, however, her last word seems unconfident for some reason.

She looked at Anna beside her, seemingly asking for help to explain their founding to me.

Looking at her twin sister who not good with words like usual, she sighs and begins to explain it to me.