There are several areas where Yandere-chan can drown others, such as the fountain in the plaza and the first floor bathroom in the eastern wing of the school. When able to drown a student, a button will appear on the HUD that says "Drown".
When pressed, Yandere-chan will grab the rival and hold her under the water for ten seconds, until she stops struggling. After letting go, the corpse will fall to the ground. Any student within the observable area will scream in horror and then act upon their persona. If she does not dispose of the corpse, the police will be called. They will note that the student was drowned, but will be unable to find the perpetrator if no other corpses or weapons are found.
In the future, Yandere-chan will be able to drown rivals in the swimming pool, or in the massive tub in the Shower Room. These methods are not fully implemented yet, as the game is currently incomplete. It is unknown when this will be implemented.
As of the June 16th, 2015 Build, only Kokona Haruka will break paths and go to a bathroom. Yandere-chan can drown Kokona in the toilet in the first floor girls' bathroom on Wednesday from 7:30 AM to 7:32 AM.
To be able to drown a student in the fountain, Yandere-chan must leave them a note asking to meet them at the fountain. This note can only be written to Kokona at the moment. She will then have a twenty minute period to drown the student. Unless lured there, no students will currently go to observe the fountain. Kokona used to observe the fountain from 7:05 AM to 7:07 AM on Monday before the November 15th, 2015 Build.
The description on the scheme menu is, "This scheme will end with your rival being drowned."
- Drowning was implemented in the June 16th, 2015 Build.
- Kokona going to the bathroom on Wednesday instead of Thursday was implemented in the May 1st, 2016 Build.