Thank you for all those who reviewed/faved/followed! Thank you my dear lovelies!

Again, the idea of the fabulous story is from Busby-Lizzy in her fic What the Warlock Said. And, the characters are not mine and they never will be, they will always be Cassie's.

Oh, and this chapter may be confusing. I was confused as heck when I was writing this. OOC's by the way!

Chapter 2

Clary sat in front of the vanity mirror in her room and ran her-his hand through Alec's hair, which was amazingly soft, much to her surprise. She saw her body-Alec on the corner of the mirror pacing across the room, back and forth, and realized that compared to Alec's hair, her hair was like this crumple of rough red strands of thread.

"Why can't you-I just reschedule this date or something? I'll say I have cramps or something!" Alec threw his-her little fragile arms in the air and landed them on her red hair while effectively ruining it more than the usual. Clary could see why Alec's hair always looked tousled, he had this habit of turning against his hair. It took a moment for her brain to disregard the thought of Alec's hair and register the fact that here was Alec inside her body talking about cramps.

"No, absolutely no!" It came out not as angry as she meant it to be. "I've already backed-out a hundred times and I cannot, you cannot not show up." Clary stood up and walked to where Alec was standing, which took her just a few steps, having Alec's body was useful. "Please, Alec, it's just lunch." Alec looked at himself, his own body, and was shocked that his face could make such an expression.

Alec made a noise, somewhere between a groan and a whimper, seriously Clary can't sound as tough as he wanted do, but he nodded. "Just lunch and after that I'll disappear."

Clary-inside-Alec smiled, she could only imagine Alec trying to act like her and have lunch with Jace. She chuckled softly at the thought.

"What's so funny?" Alec shot a her a look. "Call me if Magnus says anything." and with that Alec stormed off inside Clary's body and made his way to Taki's.

"Earth to Clary!" Alec looked up and saw Jace staring intently at her with his golden eyes. He forgot, he was Clary and he should act all lovey-dovey and fangirl-y over Jace. He tried to smile, which was an easy task, but talking was impossible, Clary had this very different use of language which he wasn't that used to. When her's was all too familiar, his was all stiff and formal.

"Oh, yeah. Sorry, just a bit," Come on Alec, think of something, "cramp-y? I guess?" So Alec didn't know anything about females but thankfully Jace was as stupid as him and decided to let it go.

Kaelie arrived shortly and handed them two plates, one plate of Chinese noodles for Clary and one plate of steak, not bloody steak but roasted to perfection for Jace. Ever since Alec moved in with Magnus he's been loving all those Chinese or Korean noodles the warlock gave him every now and then.

"I never knew you liked Chinese." Jace interrupted as Clary ate a fork full of noodles. Crap, Alec thought, he's never seen Clary eat noodles before, heck he doesn't even know what Clary eats, except for that one time they ate at Taki's and she ordered pancakes, which he can't order now because it's lunch and he has this strict rule that pancakes and eggs are restricted to breakfast. He swallowed and tried to think of a silly excuse.

"Uh, I don't. Just wanted to try it. Magnus mentioned it once before." It was partly true, Magnus was the one who recommended it to him.

Jace shrugged it off and devoted his attention to the steak before him and paused only for the occasional glances, smiles and small talk, which Alec didn't start.

When lunch was over, Alec sighed and felt as though a weight has been lifted. By the Angel, having lunch with Jace alone, while inside Clary's body , was awkward on its own, plus he had this urgent need to go to the bathroom. Just as he was about to stand up and excuse himself, Jace held Clary's wrist and looked at her straight in the eye.

"Clary, I know you're busy with training and all, but do you think you could come out with me? Just for a few minutes, somewhere by the park. I want to show you something." Alec wanted to say 'No' but a part of him pitied Jace, he must have been waiting for this small date for ages. So instead of sticking with his original plan, he nodded a yes and texted Clary. What harm could a few minutes do?

The walk to the park didn't take long enough and fortunately there were very few people there. Jace smiled at Alec- Clary and took her hand, which Alec gave into eventually, not that he liked it but because this is what Clary would've done. They walked past the duck pond, cautiously at that, and stopped at a rock bench where two trees met.

"Hey, Clary. Thanks."

"For what?" Jace, who was still holding Clary's hand, raised it and put it to his lips, god Alec wanted to pull away, but he couldn't, it would be very awkward if he failed now. Just a few more minutes, Alec thought.

"For everything." If Alec was the inexperienced Shadowhunter with no abilities to deflect a move coming towards him, something, that he would've regretted for his entire life , could have happened. With Clary's short slender arms, he was pushing Jace's chest away with one hand and was covering her face with the other. When he realized how awkward everything was, he dropped both hands and stood up immediately.

"I'm sorry Jace. I need to go back now. I uh, have cramps." Alec stammered quickly and prayed to the Angel that Jace believes him. He glanced at the golden boy and saw his face wash over with sadness and a little bit of amusement. He felt a pang of guilt hit his chest. Jace was hurting this much even though they always see each other, talk all day and do things together. Magnus, he thought.

"Okay, uhm, I'm sorry for disturbing your training."

"Hey, I'll go out with you tomorrow, okay?" Alec didn't know what Clary's schedule was but his parabatai brightened up with his response and he was sure Clary could spend a few minutes with him.

"I knew it you wouldn't be able to resist my charms." Then again Jace could do a little less with the arrogance.

Meanwhile...

"Alexander!" Clary froze at the sudden call. She turned around and saw Maryse standing at the door of the library with her hands on her hips, she meant business. Clary didn't know if she should smile or frown or shrug or whatever, thankfully Maryse gestured for her to come.

The library changed a little bit, it was no longer all gray and black but it had a few touches of color, some rich purple drapes on the window, silver linings on the book shelves, a little bit of gold and red on the table, and some pink and yellow flowers, which was Magnus' touch. She lead Alec's body on the chair by Maryse's desk and carefully checked herself, if she was sitting upright and not looking like Clary.

"I told Clarissa that it was fine of you to take the day off today." She could hear Maryse's heels clinking on the floor as she neared her chair behind the desk.

"Magnus was busy with work so I decided not to bother him." Fortunately for Clary she was amazing at making stuff up. It wasn't all bad, it was better than telling Alec's mother that they switched bodies because Magnus was too sleepy to make a potion. Then her phone vibrated. She checked it and saw Alec's- her number that lunch lasted a little bit longer and that they were coming home in a few minutes.

"Alec, you know how much I trust you with the Institute right?" Clary snapped back and tried to speak with Maryse, the problem is she can't talk the way Alec does, all formal and stuff. Should she answer with 'Yes, I do, thank you for letting me run it' or just nod her head. She stuck with the latter.

"Yes, well, these past few weeks I have been, interrupting your job." She nodded again. "And I think it inappropriate that I am taking that responsibility away from you."

It wasn't all that bad, it was like talking with Jocelyn about lengthening her curfew to 11 at night. "No, no. It's very much fine with me." She heard Alec say that once, to his dad, and Clary thought she nailed it.

"Alexander, you know I do not mean to do that. I know you prove to be more responsible than Shadowhunters your age and sometimes even those who are older." Yup, Clary thought, very much like Jocelyn's responsibility speech. "So, from now on, I leave everything to you. And I pray you accept it. Of course I will no longer drop by every week and whatever it is that leader of an Institute does I entrust you'll do."

Oh god, Clary didn't know if she was supposed to accept it. What if Alec doesn't want to run this Institute? What if Alec kills her for making the wrong decision? A million thoughts ran over Clary's head as she ran her-his fingers through his hair. She tried to think, to think of what Alec would do and then it hit her like a brick wall. Alec was the eldest among them and it would be a lie if she said that he was irresponsible, for months he'd been the one to remind all them their duties, he'd been the one who took care of matters with the Institute when Maryse wasn't around and he'd been the one who acted most mature.

"Alec? I know it's a burden to bear, but I trust you."

Clary calmed herself down and let out a breath she didn't know she was holding. "Yes, of course. I'd be honored. Thank you mother." Nailed it again. Maryse smiled sweetly, motherly.

Just as she was getting up from the chair, Clary heard the library door burst open. It was Alec- her body and Jace's. A wave of relief washed over her when she saw that Alec was fine and smiling at her. And she could see Alec was relieved too.

"Jace!" she said as he got closer. It took her a while, and a death glare from Alec, to realize that she wasn't Clary and she was inside his body. Jace just looked at him, puzzled. "I uhm, have you seen Simon? Magnus wanted to give him something he requested." Shit, that was a close one. She looked at Alec and smiled, he let out a sigh.

"Huh? No, haven't seen him. Ask Isabelle."

Silence hung in the air and before Clary-inside-Alec could talk, her phone, which was with Alec, rang. She eyed Alec who looked at her with a quizzical look then realized it was her phone ringing. Alec-inside-Clary fished her phone from her back pocket and smiled, as if he he had just won something valuable from a TV show, when he answered.

"Hey, uhm Alec. Magnus called and wanted to us to go to his apartment."

"And why would he want you to go?" Maryse was silently busying herself with some papers, probably to finalize the transfer of the Institute to Alec, and completely ignored the three of them. While Jace just looked at Clary.

"Because, I, I asked Magnus to look for a present for Jocelyn and know, to celebrate their anniversary?" Alec-inside-Clary was a good liar too, Clary thought.

"Oh, can I come?"

"No. Absolutely not!" Clary and Alec said in unison.

"Come on Jace, the Chairman hates you." Jace and Alec-inside-Clary looked at Alec who was ruining his hair. Jace tsked and then gestured them to leave. "Fine. Off you go."

At Magnus' apartment

It turns out, Clary-inside-Alec was still able to make a portal despite being inside Alec. They arrived outside Magnus' apartment and without any further delay, Alec-inside-Clary fumbled the door open. Magnus was lounging on the sofa while holding a small green-ish vial. He smirked when Alec and Clary, looking all desperate, strode inside the room and stood before him.

"As much as I wanted Alec's body back for myself, redoing the potion took me longer. Nevertheless I, the High Warlock of Brooklyn, have finished it." Alec blushed and Clary laughed.

"But, before that. I'd like to know what happened."

Clary was the first to answer and almost forgot what Maryse had said. "Oh, Maryse said she wanted to give you full responsibility for the Institute." She turned to look at herself and saw that Alec was wide-eyed and shocked. "Oh god, should have I turned it down?"

Alec dropped his daze and focused on the words 'full responsibility', he'd always wanted to run the Institute but right now, when it was in front of him, it was all overwhelming. He thought of Jace, how lonely he felt just because he hadn't gone out with Clary and then he thought of Magnus, his dear Magnus. "No, it's just that, nothing. You did good. Thank you." He looked at Magnus who was looking back at him. "Jace tried to kiss me and you have a date with him tomorrow."

The next thing they knew, Magnus dropped the vial he was holding and pink smoke covered the both of them. Clary felt a tug at her shoulders and saw a white wisp forming small circles in the air. It had been pretty much the same thing she saw before they switched bodies. White wisps forming circles then changing to pink, then red, orange, violet and finally blue. She felt slight tugs, pulls and pushes, and one final chilly streak up her spine, as if her feet touched ice. Alec felt and saw the same except for him, it burned a bit and warmed all his insides.

Alec opened his eyes and was relived to see Clary's body and not his own. He let out a sigh and smiled at the girl. Clary on the other hand tied her hair in a low pony tail using a black band in her wrist. She must be relieved to finally have long red locks again instead of the black short one Alec had. His gaze trailed to Magnus who was eyeing him.

"Don't worry Magnus, I pushed him away." He literally did.

Magnus' face relaxed a bit and he walked towards Alec with his arms outstretched. "I taught you well." He kissed Alec on the forehead and wrapped him inside his arms.

Clary arrived back into the Institute and was welcomed by Jace who was standing on the pillar behind the door. She smiled at then threw herself at him, which took Jace by surprise, nevertheless held the little girl in his arms. "Jace, I love you and I'm sorry I've been busy. I promise to make it up to you."

"It's okay. I love you too Clary."

Alec sat on the bed with his back against the headboard and Magnus was making use of his legs as a pillow and lied on the bed. He was eased by the thought that now, it was his Alec on their bed right now.

"Hey Mags," he saw Alec looking at him with those blue eyes. "Are you okay with me really running the Institute?"

"Of course my dear. Why do you ask ?"

"Nothing. I might just be more busy." Magnus closed his eyes and tried to go to sleep, he was up very early so now he was going to repay himself.

"Hm-Hmm"

"And I want to say that I love you. And if you just want to see me, it's okay if you drop by or say it to me."

Magnus opened his eyes and saw Alec playing his his fingers. His heart softened, Alec was thinking of him. "Of course sweetie. You don't need to tell me."

"I love you Magnus."

Hence the title: Teach

I kind of rushed the ending, the real world wanted more of my attention, hahaha. But I hope you liked it! And I'm sorry I can't write a proper ClaCe, I ship them too but yeah, I'm more of a MaLec kind of girl.

Please leave a review if you want, no pressure.

Again, thanks to Busby-Lizzy for the idea (again I urge you to read What the Warlock Said, it's super awesome!)!

With much love, glitters and colorful little vials,

Thunderqueen