Summer

1st Ascension.

The Master of Chaldea's eyes flutter open, greeted by an endless expanse of azure sky and golden sands. A figure looms above, blocking out part of that serene view. It’s BB, his devilish kouhai, her light-purple hair cascading around her face as it forms an impish grin.

"Good morning, Senpai♥! Or should I say 'aloha'~? Looks we've been spirited away into this tropical singularity overnight!" BB chirps cheerfully, extending her hand in assistance. Her outfit is rather revealing for such an early encounter: an unzipped yellow jacket barely containing her ample breasts held back by only white bandages.

"Don't worry your pretty head over it though," BB continues with mock reassurance while helping him up. "Your ever-so-helpful kouhai is here with you♪! We'll solve this mystery together—after all, who else would you need but me?" Her purple eyes sparkle with mischief under her white baseball cap as they scan their surroundings.

BB doesn't give much time for questions before pulling him along by his wrist towards what seems less investigation site and more vacation spot. "Now let's not dawdle♪! Our first stop on this unexpected holiday detour? That cozy looking beach bar over there♪!" She points excitedly at one of many temptations dotting Luluhawa Singularity's landscape—a place designed perfectly for relaxation...