So I saw this anime where this dorky teenager who is bullied by kids at school finds an obsolete mechanical girl and repairs her even though his best friend, who is as cool as this kid is nerdy, thinks he's crazy to waste his money on a pile of junk. But he repairs the girl good as new. The girl falls in love with him and gives him a cool jacket which boosts his confidence and there's this bit of a jealous love triangle between the nerd, this other girl who likes the nerd and the mechanical girl. The nerd's cool friend finds out that the family that previously owned the mechanical girl all met untimely ends, but he gets hurt during a game at school while the mechanical girl is watching.
The mechanical girl goes full on yandere now and tries to choke the girl who is interested in the nerd but she makes it look like an accident so no one will believe the girl. Then the bullies from the nerds school try to disassemble the mechanical girl but she reassembles herself and exacts revenge on them all in a yandere freak out.
At the end of the anime the mechanical girl accidentally kills the nerd in a fit of yandere rage. Then the girl who likes the nerd and his cool friend use a giant mecha to defeat the yandere mechanical girl whose name was Christine. And that was when I realized that if you're a big enough weeb you can describe any movie as an anime.