"Kindred Spirits on the Roof is an excellent visual novel, yuri romance focused or otherwise."

Hardcore Gamer

"I firmly stand by my words that this is one of the best yuri visual novels I have ever 'plread'."

The Yuri Nation

"Kindred Spirits on the Roof is definitely one of the better yuri visual novels on the market and should please those seeking a deep, thoughtful experience."

Rice Digital

Kokonotsuboshi Girls' Academy of Commerce, a school built on the site of an old castle, nicknamed "Shirojo." One day, the timid Toomi Yuna, who had been living a quiet life at this school, suddenly met two ghosts on the roof during lunch:

Enoki Sachi, who died in an accident before the war, and Nagatani Megumi, who died of illness 30 years ago. The two "kindred spirits" died with unrequited feelings in their hearts, met, and fell in love. They ardently wish to experience their "first time" together before their eternal rest.

...But they don't know how.

The two who are bound to the site of the school enlist Yuna to help them create more "yuri" couples at the school so that they can glean some sexual insight from observing them, and to assist the girls struggling with their hidden feelings.

(From VNDB)