I've edited the last part in chapter 11 ..

Kris got the phone call after 20 minutes Amber left them to go to the toilet.

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The connection lost and Kris start to panic..

Suho:"what happen?"

Kris:"Am, she call me........"

Sehun:"Wea, hyung?''

Kris:"guys , got to go.....Amber need me"

-Kris left the boys dumbfound

Suho:"Let's help Kris"

Tao:"but how hyung? we didn't have a clue at all"

Baekhyun:"let us just try....."

Kris's POV

Kris keep dialing Amber but what he got is just a voicemail.....

*Am,where are you??????* (worried tone)

at that moment

Lay walk through the classroom

Lay notice three suspicious girls passing them and decide to eavesdroping them

the girls are packing their bag to go home

Girl 1:"serve that tomboy....hahahahhaa"

Girl 2:"yeah...how dare she stole our oppa"

Girl 3:''shh....someone might hear us"

Lay that was about to confront the girls saw Kris entering the classroom with anger in his face

Kris slam the door that yell at the girls

Kris:"where Amber!!?''

Girl 2:"I-i don't know, oppa" stutter

Kris:"Stop the bull, now...tell me....where is AMBER'' punching the desk

Girl 3:"th-the school's sto-storage"