And another idea iiiiis:
Mili the lamia.
You can find it on the beach or in shops on the island. She has OV ( then ask) and UB (50% relationship), and BC.
If you find her on the beach, you can ride on the boat with her for 100 dollars and save her then she fell out what increase relationship to 100. She has 2 stomachs if you choose OV you can survive 2 days in human stomach, to go on second stomach you can enter with UB momentaly or acting.You cansurvive 7 days in snake stomach, to escape you need 20 in second and 6 in first.
If you find her in shop.
She works nurce in island shop and you can buy health pack for 50 what regen all HP. Or you can order a massage with the second stomach (20) or be in her breasts for 2 days ( with shrink- 50, without- 30).
If you ask to release you have choose- oral or pussy.
I don't now is it possible or not, but it just idea.