f(x)'s Luna made a kind donation in response to a heartbreaking story about a girl who can't afford feminine hygiene products.

The idol star has self-designed underwears and will be donating all the profit from its sales to KUMFA or Korean Unwed Mothers' Families Association. Luna decided to start the campaign after hearing the story about a girl who used shoe pads in replacement of feminine hygiene products.

Prior to the fund donation, Luna also delivered 14,400 feminine hygiene products to the organization. Representative Kim Do Kyung from KUMFA shed tears and thanked Luna for her kindness, and stated, "This is the first time a celebrity visited the organization themselves."

Watch Luna's kind donations for KUMFA in the clip below.