Tear Jerker / 10 Days with My Devil

• Shiki, of all people, causes these by the boatload on the end of his route. He unexpectedly takes the protagonist away to see "the end of the world", which turns out to be a distant beach where the two of them watch the sun rise over the ocean. And then the other inhabitants of the Demon House show up to bring the two of them back. Turns out Shiki rewrote the protagonist's entry in the fate database to save her, which means he's broken two laws of the Demon Realm. The heartbreaking part is that everyone else is distraught over the turn of events, and snarky, growly, mistrustful Shiki is suddenly so very gentle with everyone about being okay with being wiped from existence because of his actions.
• Shiki does it again on Kakeru's route: with Kakeru condemned to execution for his actions on behalf of the protagonist and her sister, helpless to save his friend or comfort the distraught protagonist, all Shiki can do is plead gently with the protagonist to accept him as Kakeru's replacement.