Himitsu no Decoration

Best thing about axed isekai trash is that you get to read the parts of the script that matter right away. Just the beginning and the end, the middle in those are almost always irrelevant. The sister was evil, she actually had 10 horns and the hero died in combat after the protagonist had his powers fully unlocked, it was a happy ending, and done...

yeap

With so many rom-coms dragging their feet or being annoying right now, the mood in this one is like a breath of fresh air. Plus, as an added bonus, no trolls in the comments. :)