I’ve never played/watched/read any Fate/whatever games/anime/manga, but Grand Order’s Mash/Mashu/Matthew Kyrielight/Kyrielite in a blue gingham dress with sweater and glasses pushes all of my buttons. The ensemble even has its own tag on Pixiv: 先輩を殺す私服 (senpai wo korosu shifuku), “clothes which kill senpai” (aka the player). A few people have tried to expand the theme to other characters, but it hasn’t taken off.
Amusingly, I typed the above at work, then went over to the break room to nuke my dinner, and three attractive asian women walked in wearing flirty little sundresses with sweaters, and they all had glasses, too.
In related news, I’ve got Pixivpy working well enough that I can extract metadata for an image based on the ID in its filename, store them in a SQLite DB along with my work-in-progress tag translations, generate HTML to post the selected images, and update my Pixiv bookmarks with whatever I just blogged. That last bit helps improve their recommendation system, another way of weeding out the chaff.
Senpai-killing body pillow (NSFW, of course)
Markdown formatting and simple HTML accepted.
Sometimes you have to double-click to enter text in the form (interaction between Isso and Bootstrap?). Tab is more reliable.