IN DEFENSE OF SHUTLIGHT

Kedakaku. Tootoku. Uruwashiku: 
Sublime. Noble. Beautiful. Or: Refinement, majesty, and elegance.

Her own motto sums Twilight up pretty nicely. Pairing her with an immature runt like Lock would be caviar to the general (or, if you don't get it, pearls before swine).

Posting this Shutlight comment on Facebook gave me a reply about upcoming naval warfare. 

What's more, a certain trope page states the following:

Shut

Voiced by: Satoshi Hino

• Camp Straight: He is very effeminate but he fell in love with Twilight the exact moment he saw her. MY OWN OPINION: SHUT IN MY MIND IS BI, LIKE OBERYN MARTELL. I SHIPPED HIM WITH CLOSE (FRENMITY) BEFORE TWILIGHT CAME ALONG.
• Green-Eyed Monster: He is not amused when Lock is more sucessful getting in Twilight's good graces than him. MY OWN OPINION: LOCK IS BUT A SPOILED RUNT, TWO HEADS SHORTER AND YEARS YOUNGER THAN TWILIGHT, AND THUS, NO GOOD CAN COME OUT OF SUCH A MAY-JULY ROMANCE (UNLESS SHE INTENDS TO PUT STRYCHNINE IN HIS DRINK, FULLY TYRELL STYLE).
• Ignored Enamored Underling: Shut is enchanted by Princess Twilight, but she sees him merely as one of her subjects. MY OWN OPINION: YES, SHE IS A COLD AND HAUGHTY ICE QUEEN, AND YOU ARE IN HER FRIENDZONE, SHUT, BUT NEVER GIVE UP!
• Inter-Service Rivalry: After Close's gone, he develops a new rivalry with Lock, especially when it comes to winning over Twilight. Not that Lock cares. MY OWN OPINION: EVEN THOUGH SHE FRIENDZONES BOTH OF THEM, I THINK SHUT FITS TWILIGHT FAR BETTER. HE'S AN ELEGANT GOTHIC ARISTOCRAT, SHE'S AN ELEGANT CLASSICAL MUSICIAN. LOCK IS AS ELEGANT AS A BRAT IN A CHEAP DEVIL SUIT.
• Love at First Sight: Fell in love with Twilight the second she walks in. MY OWN OPINION: THIS WAS THE SECOND I CHANGED SHUT'S ORIENTATION IN MY HEADCANON FROM HOMO TO BI. A MILESTONE IN MY HISTORY WITHIN THIS FANBASE.

• Princess Twilight

  Voiced by: Miyuki Sawashiro
• Even Evil Has Standards: She dislikes that Shut doesn't Know When to Fold 'Em and makes no attempt to hide her disappointment. MY OWN OPINION:  SHUT SHOULD LISTEN TO TWILIGHT WHEN SHE ORDERS RETREAT A LITTLE MORE TO WIN HER APPROVAL. EH, SHUT?
• ......................................................................................................................... What's even more disturbing: THERE IS A FAN THEORY THAT SHUT WILL BE KILLED, WHICH WILL TRIGGER TWILIGHT'S COAT TURN (This love story goes at a faster pace than Jaimienne, so we may see Shutlight as star-crossed already now): 
• All three keys for Cure Scarlet will appear at once.
  Following the above theory, Shut's death will trigger Twilight's transformation into Cure Scarlet.
  The Precure will offer both of them a chance to redeem themselves. But Dyspear (or Lock) will kill Shut.Twilight will then become enraged and gain the keys and transform into Cure Scarlet.
• YET THERE IS ANOTHER THEORY IN WHICH TWILIGHT. WILL. KILL. LOCK. ERE. SHUT. DIES. WHAT DO YOU SAY, SHUTLIGHT SHIPPERS? OFF WITH THE BRAT!!! YET SHUT. WILL. FREAK. OUT.
• Twilight doesn't have good familial relationships.
  In episode 16, she looked a bit strained watching Minami and her brother. Same for when she saw Kirara and her mother together. Maybe she doesn't have the best relations with Dyspear and whatever other possible family she has?
  • Would make sense. It could lead to a Heel-Face Turn.
  
  
• Lock is next to die.
  He doesn't seem to care about being evil and has Mood Dissonance. Dyspear will either kill him because of it or have Twilight do the deed. And then Shut will lose it.
• OFF WITH THE RUNT, OFF WITH THE BRAT! SHUT IS FOR TWILIGHT, AND THAT IS ALL THAT!!!