Their love is not taboo. It is the only legal way out.
They are each other's guardians, family members, and emergency contacts. Shen Chi's parent-teacher conference has been held by Shen Bo'an for twelve years.
No one taught them what "loving" should look like. They just regarded each other as "one of their own" for so many years that they couldn't tell whether it was family affection or something else.
Later they learned: Family affection means you cook noodles when he is hungry. Love is when you cook noodles, you will remember that he doesn't want green onions.
They all have it.
Mission: Caring for children