Story and enjoyment 7/10: The story is good for a short tragedy, but my problem lies with it telling all the details so late even though many of them would have made us bond with the story much earlier. Like for a 21 chapters long work you can't reveal the relation of the main characters at the last 4 chapters! You can't talk about what her illness is so late on. It kills the tragedy if you phrase it like "I'm living with a corpse".. for me that felt like a comedy especially with how Makoto looked. I honestly only got hit with feels in thelast 6 or 5 chapters.

Conclusion:
If this was a 40+ chapters read maybe the mysterious and thrilling methods of the mangaka would have been a big hit, but for 21 extremely short chapters it made it feel like something is missing throughout the read.

Is it a must read? not at all.
Is it a good short read? Absolutely.