海妹四葉(通常)
The default outfit of [[Nijisanji]]'s [[Umise Yotsuha]], as seen in post #5210007 and post #6288367. 

Her default outfit consists of a [[yellow shirt]], [[yellow skirt]], purple [[necktie]], [[black vest]], [[mismatched legwear|differently-colored socks]] (orange on left, black on right), white [[sneakers]], [[yellow jacket]], and a pouch bag slung to her right. She also has a [[smartphone]] with a purple strap and an astronaut accessory.
umise yotsuha (1st costume)