The rooftop is an important location at the top of Akademi High School. It is located above all three stories of the main building.
There are four entrances to the roof, one for each wing. There are three doors per entrance. The main doors in front open to the roof, but a small side door leads to a more private section, though no student uses the section yet. It is bright white with a grey fence. A medium height fence surrounds the rooftop, but the southeastern and southwestern sections have shorter sides, making it easier to dump a body from there as of the February 15th 2016 Build. The track can be seen from the northern side. There are several brown benches throughout the area and ventilation shafts on each corner. All five Life Note volumes can be found here as well.
There is a sink, a bucket and a knife located on the southeastern side.
Sakyu Basu and Inkyu Basu will go to the southern side of the rooftop to talk during gossiping periods while Oka Ruto stalks them. Kuu Dere will sit on the bench where Senpai sits and eat his bento. During lunchtime at 1:10, the Basu sisters will eat lunch there instead. If one of the sisters die or go missing, the other will crouch into a ball and mourn her.
Midori Gurin is located in the middle of the southern wing facing north.
Every single day, Mai Waifu will gaze out from the northern side of the rooftop during the gossip periods. Saki and Kokona will have their conversation by the north-western corner of the rooftop behind the ventilation shaft during lunchtime on Monday at 1:10 PM.
When Yandere-chan asks Kokona to meet her on the roof, she will stand by the north-western corner. There she can be pushed off, either onto the ground or into a dumpster. If her body is found, then the fence will be put up the next day.
Hoshiko Mizudori will patrol all wings of the rooftop during gossiping periods while on her phone.
As of the March 31st, 2018 Build, there are multiple large, grey vents around the rooftop, intended for future stealth purposes.
The original rooftop had a grey floor with a white fence that enclosed the whole rooftop. Two ventilation shafts were located on the roof, one at each of the two back corners of the building. There were five benches on the rooftop: three located around the clock tower, and one on either side of the rooftop entrance. Eventually, more benches, a mop, a bucket, a sink, a knife, Midori Gurin, and a cello case were added in by the clock tower.
Students used to stay here to gossip at 1:00 PM. The female students were on the right and the male students were on the left. Senpai stood on the left side of the middle ventilation shaft gazing off into the distance.
If Kokona's reputation was between -50 and -149, she would sit on the right bench close to the doors of the rooftop entrance during every gossip period. She would look at the ground solemnly.
As of the August 12, 2015 Build, Midori Gurin would stand on the southern side of the roof for the whole school day. She spawned at the rooftop around 7:04 AM.
If a police investigation concludes that a suicide has taken place, a chain-link fence would be installed the next day so that no other students can fall or jump from the roof, thus removing faking suicide as a method of elimination. The player could not pour blood from the rooftop after this either.
During Kokona and Saki's conversation, Yandere-chan can eavesdrop and learn information useful for multiple elimination methods. If Yandere-chan uses a note to call Kokona to the rooftop, she can either push her off, eliminating Kokona via fake suicide or setting up a betrayal or befriending elimination method.
In the future, the Basu sisters will talk about the school rules or history and eavesdropping on them will let the player learn more about the lore. If any murders are committed, the sisters will then talk about the recent murders instead of history. If the game is beaten without performing any actions that would cause them to stop talking about history, they will discuss the rumors about themselves in their final conversation.
If a Social Butterfly witnesses murder during lunchtime or between 7:15 to 7:50, they may run to the rooftop to hide. If any student is asked to vacate an area, they will walk to the southern side of the rooftop to face forwards.