Fics like Isekai Quartet: Exposed

Kazuma didn’t know where Subaru was. But with Aqua’s warning, he decided he should quickly find Subaru. Something told him that if he found Subaru too slow, it was going to be too late. Walking fast (why is running the hallway against the school rules, dang it!) around the empty hallway and checking each room, Kazuma finally found the familiar track suit tossed in the corner of an empty classroom. Kazuma noticed that something was wrong. Quickly bolting into the classroom, he also noted that Subaru didn't react at all. And that was when he noticed the puddle of blood that was pooling around Subaru. Subaru gets his arc 4 memories back. People notice.

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