omg i’m so sorry for only seeing this now but yes! i have a few personal faves so i’ll list them out :3
note: these are all 롱물 so i hope that’s okay!

https://posty.pe/wd7hjt
- one of my all time faves, omegaverse, subtop rich kid alpha xinlong x beta tutor junseo

https://posty.pe/s15fff
- another one of my faves, set in college wherein loser junior xinlong follows around senior junseo who he has a crush on. first time kisses and confessions, super cute

https://posty.pe/5kelaf
- set in high school with freshman transfer student xinlong x school president junseo, it’s so good and honestly i think this is slowly becoming my fav, i’ve read it twice already ㅠㅠ
- really recommend this one
- also it’s tagged mullong but also longmul so i genuinely think it can be interpreted as either or/doesn’t matter due to the setting so if you’re someone big on positions i still recommend reading and not being deterred by it

https://posty.pe/mebp9s
- this one is a bit angsty at the beginning, involves xinseo navigating through relationship issues, really cute

https://posty.pe/tmbfqh
- this is the first ever proper longmul fic on postype and its a sick fic, which i find so cute bc i have a soft spot for sickfics but also so funny bc the first ever xinseo fic posted on ao3 (by me) was also a sickfic.. which i never continued… but yes! it’s so good and also has a part 2 in xinlong’s pov!

https://posty.pe/au53x5
- ongoing with multiple parts, i’m not gonna say much abt the plot bc i’m scared of spoiling but it follows sick xinlong who moves to korea and meets junseo who stays as his at-home tutor next door(?)(they’re rich so it’s actually a guest house i think)
- it’s a little bit angsty esp towards the recent chapters.. but i think we’ll be reaching the end soon! each chapter has me at the edge of my seat

https://posty.pe/xnbbd1
- ongoing, sentinel xinlong x guide junseo, super interesting

https://posty.pe/gb5ypp
- vampire xinlong x priest junseo

i think i basically listed the entire tag at this rate but i genuinely love every fic on the postype tag.. the fics are so diverse and it’s like a genuine goldmine 🥹
i really recommend going through the tag on your own time bc there’s definitely still a few i missed, but! even if you aren’t able to do so, this list has most of them! so i hope this helps <33