Rinne no Lagrange Things

Panties are the lower-undergarment of choice for most women, usually worn with a bra.

A swimsuit worn by female students during swimming classes in Japan.

The character is wearing school uniform. Most probably he/she's a student.

A Swimsuit is a one-piece article of clothing that is designed for participating in different manners of water based events. Worn casually by the more modest.