To remove damage at turn start: open file Furude_Rika_Units.lua (generally it’s in workshop\content\289070\2626820781), in line 82, add -- at line start (or just delete this line), save file.

To remove loyalty debuff: open file Furude_Rika_Civilization.sql, in line 55, add -- at line start (or just delete this line), save file.

To remove district restriction: open file Furude_Rika_Civilization.sql, in line 164, delete things below:

INSERT INTO ExcludedDistricts (DistrictType, TraitType)
VALUES ('DISTRICT_AQUEDUCT', 'TRAIT_CIVILIZATION_HINAMIZAWA' );

and in file Furude_Rika_Expansion2.sql, in line 11, delete things below:

INSERT INTO ExcludedDistricts (DistrictType, TraitType)
VALUES ('DISTRICT_DAM', 'TRAIT_CIVILIZATION_HINAMIZAWA' ),
('DISTRICT_CANAL', 'TRAIT_CIVILIZATION_HINAMIZAWA' );

save file.

Have fun! ^-^