Notes: I chose Xanxus/Tsuna and from your list, the prompt "memories through a sieve" and "unfinished sentences". What happened with this fic was that I got ambitious and wrote it in parallels. There's one part where it's just Tsuna and one where it's TYL!Tsuna that's talking. So this is how it goes: if the number isn't bolded, it's Tsuna, if it's bolded, it's TYL!Tsuna and Xanxus. I hope that's not so confusing... XD
Summary: "...because in their eyes he could see observation and sympathy, expectation, concern; because in their presence too he couldn't do anything without giving pleasure or pain." - Rainer Maria Rilke.