I had a much harder time with this second set, so I hope they're up to snuff. It's hard to cram a whole idea into one setences without; excessive; use; of; semicolons; please forgive me. Again, please tell me which ones are your faves and hopefully I can expand on them later!
#1 (Walking): He knew how much Kurama loved him when Hiei walked away from everyone else, walked away from their friends and their enemies both, and found Kurama walking beside him.
#2 (Waltz): Kurama was a dancer, graceful and elegant no matter what he did; and although he humored the girls that were his friends, waltzing and swing dancing with them, the dances he loved best were the dances he performed with Hiei, dances of suspicion and trust and partnership and lust and eventually love.
#3 (Wishes): "If wishes were horses," Kurama muttered to himself, watching Hiei train and allowing himself to watch every movement his shirtless chest went through, but not to voice his admiration, "I would most definitely ride."
#4 (Wonder): Kurama sometimes wondered what Hiei saw in him, so obviously weaker and less driven, not interested in the things that Hiei was interested in; he didn't know that Hiei sometimes wondered what Kurama saw in him, so obviously damaged and less genteel, not able to compete with him intellectually.
#5 (Worry): No matter whether it had been days or months since last seeing him, when Kurama turned to find Hiei in his window he always took a deep breath and then smiled; the smile was for his friend, to let him know he was welcome, but the breath was sheer unadulterated relief that his friend was still alive.
#6 (Whimsy): Hiei thought it was a lark when Kurama seduced him, one of Youko's whims, and didn't let on that it mattered to him until one day he realized it had been seven years and Kurama had not taken another lover, not once, nor betrayed him in any way.
#7 (Waste/Wasteland): Hiei went so far to refer to himself as an emotional wasteland while trying to talk Kurama out of falling in love with him, calling on persuasive speech and metaphors he hadn't known he could use; Kurama only laughed and opened his arms to him.
#8 (Whiskey and rum): The first time Hiei got drunk off human alcohol Kurama supported the stumbling demon back to his own apartment, where Hiei kissed him insistently and, when Kurama demurred, claimed he wasn't really as drunk as he looked before suddenly falling asleep.
#9 (War): Because they had both been fighting their entire lives, they approached their love like a war and spent years in skirmishes and tactical retreats before they realized that love allowed both parties to win, but required both parties to surrender.
#10 (Weddings) At the wedding of Kuwabara and Yukina, Hiei took studious note of what the humans considered binding and romantic and added it to his store of demonic knowledge in order to woo his half-human, half-demon love.
#11 (Birthday): Hiei had no knowledge of his birthday and refused to either ask Yukina or select a random day, claiming that his birth had been so traumatic it was ridiculous to celebrate it--but when Kurama went ahead and picked a day anyway and celebrated on it, Hiei smiled.
#12 (Blessing): It hurt Hiei deeply when Kurama gave his blessing for Hiei to return to Makai, for he had wanted Kurama to object, to ask Hiei to stay with him; it took years for him to realize Kurama suffered deeply in his absence, but was too proud to ask for something he did not think Hiei wanted to give.
#13 (Bias): Hiei was snide in his opinion that all Youkos were whores and lechers, and Kurama never contradicted him and bore the teasing gently until the day Hiei witnessed him clenching his fists so tightly his fingernails cut his palms, whispering under his breath that it wasn't true; then Hiei never spoke of it again.
#14 (Burning) Hiei was on fire from the moment he was born, his soul tormented in the inferno of his parents' sin; so what he sought in Kurama was not the sensation of being consumed by the fire of love that so many others described, but rather to cease burning, to be allowed moments and even hours in which Kurama's blessedly cooler, greener spirit would soothe the raging heat.
#15 (Breathing): In the stillness of the night Hiei lay awake for hours, listening to Kurama breathe, and wondering why the sound brought him such solace.
#16 (Breaking): Hiei, who had a broken soul, scoffed at claims of others' broken hearts; until Kurama married a human girl, soft and sweet and everything Hiei was not, and Hiei learned that of the two a broken heart could hurt worse.
#17 (Belief): It was many people's belief that Hiei was incapable of experiencing most emotions, though a few people like Yusuke and Yukina believed otherwise; Kurama, however, did not need to believe, because Hiei had shown his emotions to him, and he knew.
#18 (Balloon): The first time Hiei saw a balloon he didn't know what it was, so Kurama bought him one and taught him how you could write a message to God or someone dead or far away on the surface and then let it go and watch it fly into the sky; Hiei scoffed at him, but later asked Kurama for a marker with which he wrote a message to his mother before letting the balloon go.
#19 (Balcony): The balcony scene from Romeo and Juliet was Kurama's favorite, and when Hiei turned his nose up at it Kurama explained that it was about lovers rejecting their past and their families, rejecting what others had told them to be in order to be with one another, and Hiei allowed that it might be tolerable, at that.
#20 (Bane): Hiei was born to be the bane of the koorime, but like so many children he rejected the path his elders had laid out for him and chose instead, after long consideration, to make a home with the first soul to show him true kindness and forget the koorime even existed.
#21 (Quiet): The quiet after you have said "I love you," and someone has not said it back to you is the deepest, most impenetrable silence in the world; Kurama endured it often, and yet despite Hiei's obvious refusal to admit the same, the fire demon never rebuked him for saying it.
#22 (Quirks): Every lover had their quirks, and so on the seemingly random mornings when Hiei would cling to Kurama and not allow him to get out of bed Kurama would shrug and cuddle with him for a few moments, and not recognize it as a symptom of Hiei's terror that Kurama would leave him.
#23 (Question): Hiei never asked Kurama if he loved him, or to stay with him, or be monogamous: the only question he ever had for Kurama was if he trusted him, and Kurama's wholehearted yes was always enough.
#24 (Quarrel): They quarreled as friends all the time, but the first time they quarreled as lovers it felt like the end of the world to Hiei, and Kurama had to hold him afterwards for hours and stroke his hair and assure him that it was not, in fact, the end.
#25 (Quitting): No matter how hard Kurama tried, he could never stop hoping that Hiei would come back to him, and so it was that over two years after the Makai Tournament, when Hiei quit Mukuro's service and found himself back in the hated Ningenkai, Kurama's window was still unlocked.
#26 (Jump) The first time Hiei jumped and Kurama was there to catch him, he was so surprised to be caught that he flailed around and they both went tumbling, and their friends laughed at them.
#27 (Jester): After the Dark Tournament, Hiei made Kurama swear a very serious oath to kill him if he ever became as deluded as 'The Beautiful' Sazuka.
#28 (Jousting): The first time they had sex it was a battle, flowing seamlessly from their sparring practice, and it was many weeks before they could make love without fighting each other while they did it.
#29 (Jewel): Kurama called Hiei jueru, which meant jewel, as his pet name for him, to let Hiei know he was precious and of great value to him; he never knew how much the nickname hurt, making Hiei think of the jeweled tears of his people, because some things have to hurt to heal and so Hiei never spoke of the pain.
#30 (Just) "Just because," Kurama said, smiling, as he pressed small presents into Hiei's hands; Hiei didn't understand that the rest of the sentence, left unspoken, was "I love you."
#31 (Smirk): No one could smirk quite like Hiei could--that was the belief Hiei himself held until one day, without his quite realizing what was happening, Kurama managed to tie him to the bedposts and he discovered that just because one did not smirk in public did not mean one was not very, very good at it.
#32 (Sorrow): Sorrow was gentler than rage or agony, just as Kurama was gentler than Hiei; but after a time, when they knew each other better, Hiei realized that the burden of sorrow could grow as heavy as anything else, and drown the soul even more easily than a more heated pain could.
#33 (Stupidity): "You can be so stupid sometimes," Kurama whispered sadly, after lovemaking, when Hiei asked if Kurama wanted him to leave.
#34 (Serenade): A human girl got it into her head that the best way to win Shuichi Minamino over would be to sing a song she'd written for him; Kurama had to physically restrain Hiei from killing her, and though Hiei claimed he only sought to be rid of the horror of her voice, Kurama knew fire demons tolerated no threat, however small, to their chosen one's fidelity.
#35 (Sarcasm): Sarcasm was Hiei's natural state of being, so it took three tries before Kurama would believe that when Hiei said I love you, that was exactly what he meant.
#36 (Sordid): Just as Karasu had cornered Kurama, Hiei later cornered Karasu, and growled, "Get your sordid fantasies away from my fox."
#37 (Soliloquy); A soliloquy, by definition, has only one person speaking, and if Hiei thought of Kurama as special in the first years he thought of him as an audience to his own soliloquy; it was many years before he realized Kurama was speaking the same or similar lines along with him, and his pain and his yearnings were not so much a soliloquy as half of a duet.
#38 (Sojourn): Hiei left the house in the middle of the night one night not long after he moved in with Kurama, wanting a little freedom and solitude and time to wonder; he was quite surprised to return to find Kurama curled up in the center of the bed in a small knot, very awake and unhappy, and he was quite willing to crawl back into bed with him and stay there until his lover was calm again.
#39 (Share): "I don't share," Kurama informed Mukuro icily, ignoring her amused smile as he pulled Hiei closer to himself.
#40 (Solitary): Hiei thought he was solitary by nature, but when he started spending time with Kurama he was forced to admit to himself that he had really hated being alone, and only thought before this that no one wanted to be with him.
#41 (Nowhere): It was the day that he first found Kurama's window locked that Hiei first contemplated suicide--for he knew if he did not belong with Kurama, was not welcome there, he belonged nowhere and was welcome nowhere.
#42 (Neutral): Hiei claimed to be absolutely neutral on the subject of Kurama dating, but the people Kurama went out with tended to wake screaming later in the night from dreams of angry black dragons warning them off, and no relationship lasted into a second date.
#43 (Nuance): Kurama had known Hiei for a long time, and even if he hadn't he was an expert reader of face and voice; the nuances in Hiei's tone when he said "I love you," told Kurama it wasn't true, that he was only trying to spare pain to someone he cared about even if it wasn't the care Kurama would have wished, and Kurama bid him sadly away, angered by his pity.
#44 (Near): Kurama could always tell when Hiei was near, for his pulse would speed up and he would feel a flush creep up his throat, his subconscious recognizing Hiei's presence and responding to it long before he heard his lover's deep voice or smelled his scent.
#45 (Natural): The thing that surprised Hiei the most about falling in love was how very natural it felt, how he didn't realize he was in love until they were separated, because being near Kurama and speaking to him and touching him and sleeping in his bed had all become so much a part of his life that it was like breathing.
#46 (Horizon): Hiei claimed that love was an illusion, like the horizon, something you could see but never ever touch--Kurama draped his arms around Hiei and declared the theory disproved, and Hiei blushed and didn't say anything while everyone laughed.
#47 (Valiant): Neither of them felt the need to be morally right, or valiant and chivalrous, in their dealings; they only felt the need to win, and to keep safe that which mattered to them, and chief among these things that mattered was each other.
#48 (Virtuous): "I don't want someone virtuous," Kurama told Hiei quietly, "I want someone who's been as low and dirty as I have been, and I want someone I can still trust with my life in spite of that because he has such honor, and I want someone who cares for the people he loves the way I have seen you do--I want all that for myself."
#49 (Victory): Hiei gave Kurama a stern talk after the Dark Tournament, and told him in no uncertain terms that while he could not speak for others, Kurama was never to risk his life on Hiei's account again because for Hiei, no battle that ended in Kurama's death could be anything but a crushing defeat.
#50 (Defeat): "All I'm saying," Yusuke said, "is that I've never seen two people who care about each other so much hurt each other so badly, and after you fight it doesn't seem to matter who proved whose point because you're both so shattered... and yet, you fight again, and again, and neither of you ever wins."
