I'm not entirely sure as I haven't read it specifically. But generally, a light novel often contains elements like a unique story world, interesting characters, and probably some sort of adventure or character - growth - related plot. Maybe it's about a hero in the Seiken Gakuin who discovers some special powers and has to face various challenges.
Well, 'seiken gakuin no maken tsukai light novel' could potentially revolve around the adventures of a character who is a maken tsukai (a wielder of something, perhaps a weapon or magic) within the Seiken Gakuin setting. It may include battles, friendships, and the discovery of new powers or secrets. Maybe there are different factions in this Seiken Gakuin place, and the main character has to navigate through political intrigue while using their maken abilities.
You might be able to find it at local bookstores that specialize in Japanese literature or light novels. Some large chain bookstores also carry imported light novels.
Leo's reaction could be complex. He would likely be frightened, but also angry that Marcus would do such a thing. He might use his wits to try and outsmart Marcus. For example, he could pretend to be more scared than he actually is to make Marcus let his guard down. He could also try to find something in the kidnapping location that he could use as a weapon or a tool to escape. As the situation drags on, he may start to worry about how his friends, the Lab Rats, are doing and if they'll be able to find him in time.
Their friends might be initially shocked. But then, some would be really excited and start planning for the baby's arrival. For example, they might start knitting baby clothes or building a nursery. Others could be a bit worried, especially if they think Leo and Reyna are not ready for this big step.
The more open - minded friends like Grover could be immediately supportive. Grover might see the love between Leo and Percy and be happy for them, maybe even helping them deal with any negative reactions from others.
Raph usually gets really angry. He blames himself for not being there to protect Leo or he gets mad at the enemy who hurt Leo. He'll be the first to want revenge and will be very protective of Leo while he's injured.
Raph would be the first to show his concern through anger. He'd be mad at himself for not protecting Leo better and also at the situation that led to Leo's injury. Mikey would be visibly distraught, constantly by Leo's side trying to cheer him up. Donnie would be all business, using his scientific knowledge to figure out the best way to treat Leo's wounds and help him recover.
His friends would most likely be very worried. They would gather around him, trying to figure out what was wrong. Percy might use his water powers to cool Leo down if he had a fever. Annabeth would be researching in the library, looking for any information on demigod illnesses. Hazel could use her powers to sense if there was any dark magic involved in Leo's sickness.