All prompts are taken from the post 100 Themes Challenge Writing Prompt on Scribbling on the Computer by Kathrine Roid.

Hi! I've decided to do a little drabble collection. I probably shouldn't be writing anything else what with IALS, but couldn't help it. Some of these I'll be expanding into oneshots. I'm uploading the drabbles in sets of 20, 20 per week or so. I'll turn the two most popular drabbles per chapter into oneshots. No more than that, cause I've only got so much time. As for which ones - well, vote for them on my profile. If you're a guest, then you can vote by review.

Introduction

It was awkward beyond awkward when Alec and Jace barged into Isabelle's room to find her half-naked on top of a fairy. They had immediately sprung apart, the fairy apologizing, climbing out of the window and getting dressed at the same time. "So," Jace said, breaking the silence, "care to introduce us?"

Complicated

"Just fill in the damn form!" the man across the counter snapped at Jace. The blond Shadowhunter was doing his best to fill in a form for a bookstore membership. His pen was drifting awkwardly over the 'name' section. Finally, he scribbled in 'Lightwood-Wayland-Herondale' and shoved the form across the counter. The man raised an eyebrow at him. "It's complicated, okay?" Jace protested.

Making History

Hodge stood in front of the large crater in the middle of the Institute library with a fourteen-year-old Alec, a thirteen-year-old Jace and a twelve-year-old Isabelle standing around him. "When I asked you to explain how history is made," Hodge began slowly, "I didn't exactly ask for a demonstration involving destroying the Institute either." Alec frowned. "It was Jace's idea!" he protested. "Was not!" Jace exclaimed.

Rivalry

Alec and Magnus waited with bated breath as Chairman Meow and Church circled each other, hissing and spitting. "I didn't know cats could have rivalries," Magnus commented lightly.

Unbreakable

Jace and Alec stood at the very top window of the Institute together, Alec warily holding up a Sensor Jace had 'modified'. "And you're absolutely certain this is unbreakable?" Alec asked slowly. "Oh, just drop it!" Jace sighed impatiently.

Obsession

Occasionally, Clary's obsession with drawing could get a little annoying. "Done yet?" Jace asked. "Don't move!" Clary hissed. She was perched on his chest, both of them dressed in full Shadowhunter gear and on Jace's bed, back from a night of demon-hunting. "Done," Clary announced, throwing her sketchbook aside, and she leaned down to kiss Jace.

Eternity

"I love you," Jace muttered into Clary's hair as they sat at a subway station, waiting for their train. Clary buried her face in his chest. "For how long?" she asked, voice muffled. "Forever and always." She was glad he couldn't see her blush.

Gateway

"A portal," Hodge droned, "is a gateway…" Jace rolled his eyes slightly and leaned back. Besides him, Isabelle had drawn a rune on her hand - the rune of levitation. She aimed her hand at a box of beads and lifted it slightly. Quietly, she drifted it away from the table - and dropped it. A crash sounded through the library as Hodge immediately began to scold Isabelle. Looked like there would be no lesson about gateways today.

Death

Shadowhunters never feared their own deaths, for they knew it was inevitable. That didn't mean they couldn't fear others' deaths, though. And, oh, Max's death stabbed the three remaining Lightwood children in a way an actual knife bringing death would never hurt.

Opportunities

"This is a once-in-a-lifetime opportunity!" Alec exclaimed excitedly to his siblings. "A warlock's giving a talk on the various types of demons!" Isabelle and Jace stared at him. "Alec," Isabelle began slowly, "you do know you're dating a warlock, right?"

33%

Despite the fact that Clary pretty much lived at the Institute anyway, she still went to mundane school. "How much is thirty three percent of thirty nine?" she asked Jace one day while doing her homework. Jace stared at her. "Ask me how to kill a werewolf using a blade that's thirty three percent silver and I can tell you."

Dead Wrong

"And I'm sure Simon doesn't love me anymore." Isabelle sniffed as she spoke. Her eyes were red. This was the only time Alec had ever seen her cry ever since Max's death. "Izzy," he began, "you're dead wrong. Simon loves you very much."

Running Away

Two days after Jace first came to the Institute, Maryse found him packing his bags and standing at the entrance of the large church, the little boy struggling to open the door. "Jace!" Maryse exclaimed. "What are you doing?" Jace blinked. "I don't want to be a burden," he said softly. "I'm running away so I won't trouble you." Of course, Maryse didn't let him.

Judgement

"Don't judge, but -" Isabelle was cut of by a barrage of words from her brothers. "You slept with a vampire and got pregnant?" Jace asked. "You're dating a warlock?" Alec asked. "No!" Isabelle exclaimed. "I lost my whip, and I need you two to get me another!"

Seeking Solace

Without fail, the remaining three Lightwood children would show up at Max's grave every year, once during the anniversary of his death, once on his birthday, once every Christmas, once every Easter and once every Thanksgiving. Then they would visit all of the places Max loved, together and reminiscing. "Why?" Clary had once asked. "We're seeking solace," Jace answered softly. "We're trying to remember him and grief him and let him go at the same time."

Excuses

"Alexander," Robert said to his son grimly. The two of them were seated at the Lightwood dining table. "What turned you gay?" Alec stiffened. "Excuse me?" he exclaimed. "Something, we must have done wrong," Robert explained slowly. Alec's blue eyes widened. "You're just looking for excuses to not accept the fact that I'm different!" he shouted at his father. That night, the only person who dared stand within two feet of him was his parabatai.

Vengeance

"I-" Jace threw one knife against the target. "Am-" a second knife met the board. "Going to kill that bastard." Isabelle sat nearby on a table. She watched Jace with interest. "Isn't that a little bit overboard? I mean, he just forcefully made you his twisted version of a parabatai and tried to rape your girlfriend." Jace choked. "He what?"

Love

Max ran around the house, carrying a tape recorder. "What's love?" he kept asking people, then shoving the mic in their faces. "Love makes you do crazy things," Robert answered fondly. "Love is a double-edged sword," Maryse told him. "To love is to destroy," Jace replied, not looking up from his book. "Love is crazy," Isabelle laughed. "Love is…" Alec trailed off.

Tears

Isabelle didn't expect to find Clary curled up on her bed, using one of Isabelle's many towels to wipe off her tears. "What's wrong?" she asked Clary awkwardly. "I wonder how Jace's doing," she whispered. "I hope Sebastian doesn't hurt him." Not knowing what to say, Isabelle joined Clary in her tears instead.

My Inspiration

"Where do you get all that inspiration to draw?" Isabelle asked Clary curiously. Clary shrugged. "I don't know where my inspiration comes from," she admitted.