[Katekyo Hitman Reborn / Mukuro X Tsuna] Flowers Bloom Sleeplessly

A belated Valentine's Day story, with a Hanahaki Disease AU. Contains ABO, beware. Actually, this is me (X Introduction: Not every unrequited love hopes for the other person's response. Some are twisted forms of yearning. Even knowing this love can never come true, you still long to become everything to them. Even if you become the source of their misfortune, you'll smile and accept your fate. A flower born in the depths of darkness blooms quietly on, even if no one knows it is there. Theme: