isHappyEnd

WHY
As you get older, the anxiety of not knowing how a story will end becomes difficult to bear. You no longer have the stamina to commit to hundreds of pages without knowing what's ahead, the way you once did. If you're going to read, you'd prefer stories you know will end happily.

Besides, I've held this belief for a long time: truly excellent works remain excellent even after you know the ending. So there's no harm in revealing it beforehand.

WHAT
Even when you think "I only want to read books with happy endings," there's no way to search for them in the world. Book introductions follow the courtesy of avoiding spoilers, and while summaries and reviews are everywhere, no one answers the one thing you most want to know: "Does this book end happily?"

So I decided to create a place where you can choose books knowing how they end.

HOW
An AI scored approximately 2,500 works of Japanese literature and manga (both shonen and shojo) one by one, assigning each a "happiness score" from 0 to 100. 100 is a perfect happy ending, 0 is hopeless collapse. Words like "bittersweet" or "poignant" are interpreted differently by different people, but numbers can be compared and filtered.

For people who don't mind spoilers, I've also prepared explanations of the actual endings. How the story concludes is written in a single sentence, and it only opens for those who tap it. On days when you don't want to know, you can simply close it and choose based on the score alone.

On the homepage, one work appears daily as a card. On days when you haven't decided what to read, you can flip through these, and on days when you want to search, you can filter from the list by ending type—only happy, only sad, and so on.

While I had AI do the scoring, I don't trust AI's memory alone. I've verified each work one by one by checking sources like Wikipedia to confirm it's properly concluded and how it ends, and I only publish works that have been verified. There's no point in having vague numbers for the sake of reading with peace of mind.