Tang Xinxue was born frail, a pale and delicate invalid. Then he transmigrated into an explicit ABO novel, becoming the young beta sister-in-law of the widowed, universally adored protagonist.
System: Your mission is to protect the protagonist and stop him from turning evil after being hurt by Alphas.
Tang Xinxue: ...Could you let me finish coughing up this blood first?
As the widow of a deceased business magnate, Tang Xinxue enters the Empire's most prestigious aristocratic academy. He has to worry about coughing up blood and collapsing at any moment while also keeping the various rabid Alphas from going after his fragile Omega younger brother.
And so, a strange sight appears at the academy:
The pale, sickly widower takes on the academy's top Alphas one by one:
When the troublemaking heir releases pheromones during training to bother his younger brother, Tang Xinxue grabs pheromone blockers and splashes them in the Alpha's face, smiling as he says, "Sorry, I'm frail. I have trouble holding on to things."
When the gloomy, obsessive heir to a wealthy family puts a snake in his younger brother's desk, Tang Xinxue lightly taps its head, and powdered realgar spills down. "My little brother is timid and afraid of living creatures."
When the school bully deliberately injures his younger brother during swimming class, Tang Xinxue "accidentally" hits the switch for the pool's automatic cleaning robot, sending it chasing the bully around the pool. "Smart devices can be a little too sensitive sometimes."
One day, an Alpha Tang Xinxue had disciplined that night climbs over the wall in a fit of anger, intending to sneak up on the arrogant little beta. Instead, he discovers Tang Xinxue's biggest secret.
As soon as the protagonist releases his pheromones, Tang Xinxue's eyes turn red at the corners, and his voice trembles:
"That's enough... Stay away from me. I... don't like people touching me."
Alpha: ...Damn, now I want to touch him even more. What do I do?
By the next day, the whole academy knows:
That haughty, aloof widower has pheromone cravings, but he's also allergic to pheromones.
One touch makes him tremble. Too much scent makes him go weak.
The more he resists, the more people want to defile him.
The Alphas Tang Xinxue has put in their place keep releasing their pheromones and surrounding him.
Gradually, things start to get weird. They go from wanting to teach the widower a harsh lesson to rubbing against his fingertips on their knees when they're in heat:
"Madam, your husband is never home. I can't stand it anymore."
"Madam, you smell so good."
"Madam, your husband doesn't say anything... That means he's fine with us pursuing you, right?"
"Madam, it's so unfair. Your unreliable husband got you hooked, and now all you have is his portrait... But I can help you."
Tang Xinxue, his eyes red from all the pheromones: "Cough... Get lost."
Although things have gotten strange, Tang Xinxue doesn't care. As long as he completes the mission, he can get a healthy body and run off with the old geezer's inheritance.
But later, even his obedient fake little brother starts acting strangely. He stares gloomily at the old geezer's portrait all day, rubbing against Tang Xinxue's nape and saying weird, horny things.
The protagonist: "Sister-in-law, you smell... like all those rabid dogs."
[Bonus Scene]
The room was so thick with pheromones they seemed almost tangible. Tang Xingye was pressed against the portrait, the young man's feverish chest against his back.
The candlelight flickered wildly, casting their overlapping shadows on the portrait, as though those cold eyes were watching everything.
The young man lovingly caressed his nape. "Baby, did he never teach you how to kiss, or am I just better at it?"
His peripheral vision caught the similar face in the portrait, and he gave it a taunting, icy smile.
Then he leaned close to Tang Xinxue and whispered suggestively, "Do you like... him that much? My pheromones are exactly the same as his."
"Get lost!" Tang Xinxue trembled with rage and slapped him, reaching for the blockers, but the young man caught his wrist.
The young man tilted his head, licked the corner of his lips, and laughed dreamily. He lowered his head to kiss Tang Xinxue's trembling palm. "That was a great hit, baby. Give me another reward..."
1. One top and multiple bottoms. All the tops are sexually inexperienced, and there are no romantic relationships between them.
2. The fake little brother will undergo a second differentiation.
Theme: Treat others sincerely, and receive sincerity in return