My Invincible Older Sister Goes Around Telling Everyone I'm Strong

For the first time, Dongyun Zhenhe leaves home alone to investigate the cause of his older sister's death, traveling to a neutral city. On the plane, he meets Shui Xia Ting, a girl who claims to know every dish in the world, and so begins a brand-new fantasy school romance.

"If it were my little brother, he could definitely do it."

"Find the killer and avenge Setsuna."

"By the way, for some reason, I'm feeling a little angry right now."

"Dongyun Zhenhe, you shouldn't have come here."

"Without your sister's sword, you're nothing."