![4girls bangs black_hair blunt_bangs brown_eyes brown_hair crying cum cum_on_hair embarrassed fubuki_(kantai_collection) hatsuyuki_(kantai_collection) holding_hands interlocked_fingers kantai_collection looking_at_viewer miyuki_(kantai_collection) multiple_girls open_mouth sakura_(medilore) school_uniform serafuku shirayuki_(kantai_collection) tears rating:e score:28 post #2724630](/cdn_image/preview/4a/7a/4a7ab5ea22d9d1a01fa2713b22ed774b.jpg)
Contrary to the what tag, Posts that you do not understand at all and leave you thinking, "WHY would you do that?"
Less that they leave you in confusion more that you just do not understand why they would do it. Similar to unlikely crossovers; you can see that they did it so it would not categorize as 'what', but would still qualify as "Why?".
Its pixiv equivalent are どうしてこうなった OR どうしてそうなった.