Idea: Together Forever - Shroud's Happiest Day
Ortho: 'In life and death, sickness or health, forever by your side... Will you accept me?' - Another day in NRC happens, till Ortho is found out of his usual excitement. When questioned about it, his answer brings shock: he asked for someone's hand?! His brother's?! What?!
Everyone knows the wrong implications this mere concept brings and panics over whatever Idia might've taught his little brother with the stuff he watches; however, Vil and Lilia calm everyone down, to let Ortho explain himself.
The humanoid explains that he recently came into contact with his parents' wedding pictures, and inquired about that; his mother was more than happy to share about their 'happiest day', or at least, among the top happiest. Mr. Shroud is a bit embarassed about having to explain something like that; after all, Ortho could just research about weddings and ceremonies.
The boy's mind is set when he sees a pamphlet offering small ceremonies' discounts, but the mere subject bringing brings out the worst reaction from Idia: he lashes out at Ortho, demanding that he leaves him alone and not bring up this trash anymore; he then admits somehow forgetting about the Phantom Bride incident, and feeling embarassed and upset about ticking him off for not remembering such a matter. He then explains why he even 'proposed': he wishes to celebrate their close relationship as family, and their commitment to one another.
Vil then understands, chuckling at the boy's innocence; he promptly explains the misunderstanding, that Ortho isn't much looking to get married, but to have a commitment ceremony. Basically, it can be held as a traditional wedding or a private reunion for paper signing, but beyond couples, it can also applies to family commitments, such as a mother and their children. Sebek immediately links this description to Lilia and Silver's adoption paper signature moment, or even when they verbally agreed on Silver having his father's last name (spoilers? though everyone must already know), and Vil confirms it.
With this cleared up, Lilia is more than happy to help Ortho, and so are the others, who become determined to convince Idia to change his mind. Ortho however is hesitant about contacting him again, although he has done it before whenever his brother was in a bad mood; he doesnt want to force Idia or anything. They consider subliminally messaging him (Jade's suggestion), to warm him up on the concept, until Cater finds a certain article.
Idia is shaken, ignoring any calls, from dorm and family. He obviously feels guilty about lashing at Ortho, but after what he saw, he couldn't hold himself back. As he logs in to play and calm down, he witness an event happening, but feels like ignoring it for being wedding-themed. However, MuscleRed (Lilia) convinces him to go with him for a raid anyway; when Ortho's brought up, Idia admits how ashamed he is for what he did, and explains his side: sure, he does remember the Phantom Bride shebang and how he almost died, but... that wasn't the reason. He even kept the suit, for the aesthetic overall, and 'it was kind of too pretty to just discard'. The actual reason he was ticked off? His favorite member of Premo just announced her engagement to an athlete, alongside her retirement from the group.
And it's Lilia's turn to be angry at Idia for his brashness, for such a 'trivial thing'; even if Idia wanted to argue back, he just agrees and mutters about how he's a jerk, as if he didn't felt bad enough. When his scolding's over, Lilia pretty much demands that he takes responsibility for this mess. In Ortho's case, Cater told him about Premo's article, and this makes Ortho feel even more guilty, because of Idia's uber-fan status and passion for the idol group. Vil however shakes that off, arguing it gives Idia even less right to disregard 'his most honest feelings'.
Ortho manages to assemble a 'wedding gear', following Vil and Crewel's tips (Vil being honoured to be his man of honor (pun intended?)), as well as being inspired by eveyone else's suits. Lilia organizes the whole party ceremony, aided by Ignihyde and Diasomnia's students. Idia does take responsibility and apologizes, but with all that assembly, his anxiety triggers are all pressed at once: a fancy-schmancy party full of people was chosen, and he'd have to stand in front of everyone?!
The big day arrives: Ortho reveals his wedding gear, his parents escort him across the room, Lilia's already crying, Silver and Malleus commenting on the whole 'children are meant to cry thing'... but where is the older brother? Sebek offers himself to drag him off his room to honour his compromise, Lilia siding with him for once, but then-
Idia: 'HOLD IT!'
Idia has arrived, wearing the very tux, panting hard as he ran all the way there. He apologizes for the delay, having finished the raid Lilia dragged him to overnight, since he was practically 'done over there' once his scolding was finished. Lilia and Vil however are still not pleased; they ask Ortho and the others for a short moment to make him look 'proper' for this event.
Now the event happens: in the absence of Crowley (convenience or not?), Cater is selected as the officiant (Lilia did ask why not him, but Ortho explained that he took an equally big role on the celebration with the party arrangements, and convincing his brother, so he accepts it). Idia also reveals the other reason he took so long to arrive: even if not a wedding, he bought a 'ring' for this ceremony. Specifically, a pair of arm rings with personalized attachments, and he might've taken a while to perfect Ortho's to not damage his wedding gear.
When time arrives for the vows, Idia removes Ortho's mask, wanting to 'fully see him' for this; everyone else had their theories over why Ortho covers his face, and even ponder if it's related to Idia's trauma or of the humanoid experiences some form of bug or glitch of not done so, but Ortho and his parents admit it's for aesthetic. He is a Shroud, after all.
Forehead kisses are given, and cheers and wailing (specially from Lilia, Sebek and Vil) are echoed over the place. During the celebration afterparty, Ortho is thankful for everyone helping him make such a thoughtful memory. Idia... is under the food table, recovering his introvert battery with a quick gacha game. Ortho prevents the others from pulling him out of there, saying he had enough emotion for one day and did appear after all.
Idia: 'Even if I never get married in the future... I'm more than happy to stay by your side forever, Ortho.' Ortho: 'Nii-san, I love you very much. Let's keep looking out for each other.'
Extra scene (card vignette?): Ortho asks Idia to sleep by his side like they did sometimes when younger; by sheer coincidence, the overnight exertion from yesterday caught up to Idia, and it's not like he would deny his little brother's pretty please request. Their parents find them asleep together and cover them.










