Chrome was with Mukuro when Tsuna grabbed him and she pats him on the back because she knows how this is going to end

Chrome loves her adopted brother. There’s no doubt about it. In her more dramatic moods she wonders if despite the year between their ages and being born to different families if they were meant to be born as twins. He was like the missing part of her. One soul in two bodies their adoptive family claimed. Weird little bastards their older brother fondly called them.

That didn’t mean she was blind to Mukuro’s faults if anything she was the most aware of them than anyone else. He was intense, possessive, violent to those that he felt had wronged him or the scant few people he had claimed as his, and perhaps his biggest flaw was once he was focused on something be it an idea thing or person he would never let go. Chrome was one of the people he had fixated on, back when she was fourteen and barely out of the hospital after her accident trying to adjust to her new reality and a new family all at once. It probably should have scared her, his undivided focus and attention, but he wouldn’t hurt her and it had been nice to have someone so… interested in her after so long of being ignored and hated by her parents. It hadn’t lessened in the years since, even as he found new things or ideas to catch his interest, but she had always known that eventually he would fixate on another person in addition to her.

That person came in the form of a wide-eyed boy with the fluffiest brown hair she had ever seen (he looked almost like a kitten, sweet and innocent and running to a wolf for protection) winding his arm through her brother’s while they had been going over an assignment for Chrome’s art class and announcing, loudly and bordering on panicked, that they were dating.

She knew the moment Mukuro’s eyes had traced over the boy’s face before flicking over to the person standing far too close to him. Knew when he unwound their arms to draw the boy closer to him. Knew when her brother traced possessive fingers over the side of the boy’s pale throat.

The poor guy had been claimed, and god help anyone who tried to take him from Mukuro now.

“Is there a problem, darling?” Mukuro purred, never taking his eyes off the man that was still too close to his new fixation.

“You didn’t say you had a boyfriend.”

“He shouldn’t have to,” Her brother’s eyes narrowed, clever mind already putting two and two together for why the poor guy had grabbed the first person he had seen and claimed to be in a relationship, “you should learn to accept rejection.”

Chrome bit her lip so hard she tasted blood. Her beloved brother wouldn’t see the irony in that statement and laughing now wouldn’t help this new ruse. She would laugh at him after. But first, there was another problem at hand a problem that would end with their family having to pay off the police again to keep Mukuro from catching an assault charge… or worse based on the way the man was reddening with rage.

She made a show of adjusting her grip on her cane and wincing. Not that the wince was fully for show. They had been standing long enough that pain was starting to lance up her leg in protest.

“Mukuro, let’s go. You promised you were buying both lunch today.”

Immediately her brother’s eyes were on her, tracing over her furrowed brows and the careful way she held herself. Good. He would be more focused on getting her off her feet than murder at least.

Later when they were settled at a rather nice restaurant Tsuna introduced himself and promised to pay them both back. He had also apologized and said he would get out of their hair.

Chrome had laughed, reaching across the table to pat the back of her future brother-in-law’s hand. He would learn soon enough that there was no unwinding his life from theirs, but she would at least get to sit back and enjoy the show in the meantime. Besides, she had the feeling Sawada Tsunayoshi would make a good friend.