Please

Guiding hazard
https://www.mangago.zone/read-manga/guiding_hazard/

Bloodbound
https://www.mangago.zone/read-manga/a_guide_thicker_than_blood/

Dear, 00
https://www.mangago.zone/read-manga/dear_00/

Senza Replica
https://www.mangago.zone/read-manga/senza_replica/

Approximal Guide (??)
https://www.mangago.zone/read-manga/approximal_guide/

I'm Not Your Guide To Destiny
- but I appreciate the novel more because afaik manhwa changed so much just to fit in sex scenes when the original source material does not have that :<