The main protagonist, a boy, meets a girl online and starts talking/chatting with her almost everyday. Then the girl falls in-love with the boy but hasn't confessed to him yet. The boy decreases the amount of time they talk and eventually stops talking to her.
The girl then, from out-of-nowhere, transfers to his school and sees him with another girl. The girl then goes full yandere.
Something that is similar to that and any suggestion is fine and Thanks in advance <3
