Video Girl Ai/Tear Jerker

": "And then... Kokoro-kun... became human"."
 * The last Video Girl Ai OAV, specially.
 * If you go to the manga...
 * and  will make you bawl.
 * If that doesn't do it for you, there's also the second-to-last chapter where
 * But even after all that, if you don't cry at the Grand Finale where, you have no soul.