Spring passes and summer is coming. The only thing Kiritani Shuusuke's good at is making coffee. He transfers to Kiyama Academy and move to its dormitory. In that evening, He meets a senior.
"Kiritani Shuusuke-kun, would you like to work with me at Arte?" In front of his eyes is a hand of Shinomori Yomogi, tiny and slim. Unable to resist, he reaches out his hand. "If you don't mind then I'd love to." In that moment, his world unfrozen. That's right, This is the start of his wonderful café lif--
"Hey, nii-san! Taking a part-time job without telling your little sister? This will not do!" "Shuu-kun! Me, your childhood friend, is here to help!" "Darling, here am I." Just as he gets excited about his café life, three girls show up.
His blood-related little sister, Kiritani Aoi A childhood friend he's never seen in 5 years, Tachibana Mia and, out of nowhere, a pretty girl calling him "darling", Shiina Serika
"I am *the one and only sister of nii-san!* I'll never let anyone take him away from me!" "Noooo! Shuu-kun's first kiss will be mine!" "I'm his *legal wife*. None of your efforts will ever be useful." "Shuusuke? *Popular*, aren't ya? *Don't you remember* I'm the first girl to reach out to you?"
Love rivalry of girls with over 200% affection in a cafe known as "Arte"! Who will be the one to win over him?!
The race has now begun!
(translated from https://madosoft.net/cafetrical/story.html)
