Chapter Text
Mind you, this story is not for those who don't like detailed sex.
Established 24-year-old couple living together in UA college dorm apartment — openly together, everyone knows.
Mina: Izuku’s closest friend. Gives blunt sex advice, personal talks, notices when Izuku walks funny after sex and teases gently (never publicly exposes).
Alpha Drama: Alphas posture and fight over omegas. Katsuki does not play about his omega - any ass-gripping (even playful) can trigger fists. He brings his backup group known as “backup dancers” (Kirishima, Sero, Iida) to de-escalate and limit bloodshed.
Aizawa: Homeroom teacher. Regularly intervenes in alpha fights, gives warnings, handles paperwork.
Monoma: Frequent verbal rival — mocks Katsuki about the relationship, smoking, “omegas making alphas soft.”
Squad: Kirishima, Sero, Denki, Jirou, etc. — parties, gossip, teasing.
25-chapter fic focused on UA college life.
Mix of: gossip & friend hangouts, campus alpha fights/drama, domestic apartment moments, varied sex scenes (sensual + occasional rough), emotional slow-burn.
Overall arc: Starts with settled couple life, layers in drama/gossip, builds toward serious talks about the future, ends with them deciding to try for a baby (full heat + breeding in the later chapters).
Katsuki: Light smoker (1–2 weak cigarettes every few days). Drinks beer (favorite: wine). Gets slurring drunk but not blackout. Izuku snatches cigarettes from his lips and Katsuki throws tantrums (hands flailing, grumbling, angry noises). Allows drinking to slurring but monitors/checks on him to prevent passing out. Hates when Katsuki blows smoke in his face.
Mina also smokes occasionally, bonding with Izuku.
Alphas: Sheaths. Katsuki’s cock is a heavy 9-inch horse-cock (human version, not cartoonish, just slightly longish): thick, veined, aggressive. Soft/partially unsheathed ≈ 6 inches with wrinkled heavy sheath and peeking flushed head + slow pre-cum. Fully out: sheath tight at base, heavy and bobbing. Always a noticeable bulge in pants when contained — can’t fully retract into nothing.
Izuku's anatomy:
Fuck-hole = ass with deep internal cum pouch (far inside, unreachable by fingers).
The pouch is a pocket inside the anus that open during heat ( not literally ), sucking in the sperm the Alpha places in. It can't be reached by fingers, the pouch like opening is closed tight when not in heat. Arousal still doesn't open it. Pregnancy only occurs when the omega is in heat.
Birthing slit: Strictly for birth only. Sealed tight when not pregnant (positioned between ass and tiny cock). Never meant to be fucked.
Katsuki is obsessed: scrapes teeth, sucks hard, licks, pulls edges until puffy/swollen. Can’t open it.
Tiny 3-inch cock: Useless for breeding/penetrating, but leaks, weakly cums, or pisses ropes when overstimulated.
Basically:
--3 (penis)
| ( birthing slit )
0 ( anus )
Visual design. Above.
Fluid rules: Sensual/slow sex -> steady leaking only. Hard railing or rough post-fuck fingering -> squirting or pee ropes/squirting.
Post-birth: Slit stays partially open ~1 month (hypersensitive “period” — no blood, just raw tissue). Alphas love licking/sucking/mouthing it. Fucking it remains dangerous/off-limits.
Birth: 7-month full-term pups that look slightly premature (small). Slow slide with pushes needed but not painful.
If you dont know what a sheath is, search sheath animal picture. Yes. It has a slightly animal detail in my omegaverse.
Izuku is 68 kg, lean but still masculine omega type.
Bakugo is 75 kg, a bit taler than izuku.
Izuku’s preferences: chest-to-chest ( lap sex ) stubble-rubbing, neck kisses, turned on by Katsuki’s reading glasses + blush; strict knot-warning rule + sucking ropes when close.
Izuku is not a twink in this story type. He's strong, lean, nice butt, arms, sassy, bossy over Katsuki who gets in fights every semester because alphas try moves on him.
Katsuki's the man that would try fists at alphas who try even to blink at izuku gingerly.
Explicit Omegaverse anatomy (Katsuki’s sheath + heavy 9-inch cock with morning behavior; Izuku’s intersex setup with deep pouch that rejects outside heat, sealed birthing slit that Katsuki obsesses over, tiny useless 3-inch cock, leaking vs. squirting rules, post-birth month, 7-month small pups).
Varied sex: sensual slow (lion-mount while working aka izuku on his belly, tzken from behind, chest-to-chest desk riding aka lap riding, missionary, bent over, sideways, empty classroom, pure oral) with leaking; rougher scenes with squirting/pee when railed or fingered hard after.
Katsuki has a slight facial stubble. Uses glasses for reading.
Tone: Filthy + romantic domesticity, campus drama/gossip/alpha possessiveness/fights, slow emotional build to deciding on a baby.
Stay tuned for when the story starts, it's filthy, romantic, animalistic vibes ( 1% ), boys in love, college drama and party, gossips.