Aquatic Center (AU) as Pool
The gang hangs out after Junjai's victory in the math event.
“Kiss Mark” Filming Locations
Toxxxxin begins integrating Junjai into the group but when she learns of the potential downsides of being a member, she must decide whether it is worth it.
Oxytoxin episode “Kiss Mark” was filmed in Bangkok in Thailand.
โรงเรียนสาธิตนานาชาติ มหาวิทยาลัยมหิดล (Mahidol University International Demonstration School) as St. Cecilia School
The girls of Toxxxxin help Junjai make some changes and she has to grapple with some potential downsides of being in the group.
Krung Kasem Road (between Lan Luang 5 & Lan Luang Road) as Bus Stop
Junjai waits for the bus in the morning and later sees some other students taking her picture.