Is a yuri love triangle heaven or hell?

One day, a blonde foreign exchange student arrives in the class of Yuri Tachibana, a high school girl who has a vague interest in foreign countries! The exchange student is a huge fan of a yuri anime that was set in a fictional version of this school, and claims she wanted to study abroad because "I can't die without studying at this sacred holy ground!" On top of that, she keeps finding reasons to keep her hands all over Yuri, calling her the ideal Japanese girl. However, there's someone staring at them and muttering, "Unforgivable..." This is the commemorable first full volume by the popular yuri artist, Nabia Uemura!