“Happy” by WJSN climbs inside the top 50 of So Casual 100™, rising 16 spots to #38.

So Casual 100™: #38(+16) Happy, WJSN [40 weeks]. *peak: #1*

WJSN's "Happy" is now certified Platinum in the So Casual Charts.

Awarded for selling over 1,000,000 units worldwide.

“Happy” by WJSN reenters inside the top 5 of So Casual 100™ at #4.

So Casual 100™: #4(re) Happy, WJSN [30 weeks]. *peak: #1*

WJSN's "Happy" is now certified Gold in the So Casual Charts.

Awarded for selling over 500,000 units worldwide.

“Happy” by WJSN reenters inside the top 50 of So Casual 100™ at #47.

So Casual 100™: #47(re) Happy, WJSN [25 weeks]. *peak: #1*

“Happy” by WJSN reenters So Casual 100™ at #72.

So Casual 100™: #72(re) Happy, WJSN [23 weeks]. *peak: #1*

“Happy” by WJSN spends its 20th week in So Casual 100™ this week.

So Casual 100™: #32(-20) Happy, WJSN [20 weeks]. *peak: #1*

“Happy” by WJSN climbs inside the top 10 of So Casual 100™, rising 2 spots to #10.

So Casual 100™: #10(+2) Happy, WJSN [18 weeks]. *peak: #1*

“Happy” by WJSN climbs inside the top 10 of So Casual 100™, rising 7 spots to #9.

So Casual 100™: #9(+7) Happy, WJSN [16 weeks]. *peak: #1*

“Happy” by WJSN climbs inside the top 20 of So Casual 100™, rising 11 spots to #16.

So Casual 100™: #16(+11) Happy, WJSN [15 weeks]. *peak: #1*

“Happy” by WJSN reenters inside the top 50 of So Casual 100™ at #34.

So Casual 100™: #34(re) Happy, WJSN [13 weeks]. *peak: #1*

“Happy” by WJSN reenters inside the top 50 of So Casual 100™ at #24.

So Casual 100™: #24(re) Happy, WJSN [12 weeks]. *peak: #1*

“Happy” by WJSN climbs inside the top 20 of So Casual 100™, rising 73 spots to #17.

So Casual 100™: #17(+73) Happy, WJSN [10 weeks]. *peak: #1*

“Happy” by WJSN returns to #1 on the So Casual Hot 100!

So Casual 100™: #1(new) Happy, WJSN [6 weeks]. *peak: #1*

“Happy” by WJSN reenters inside the top 10 of So Casual 100™ at #9.

So Casual 100™: #9(re) Happy, WJSN [5 weeks]. *peak: #1*

“Happy” by WJSN reenters inside the top 50 of So Casual 100™ at #44.

So Casual 100™: #44(re) Happy, WJSN [4 weeks]. *peak: #1*

“Happy” by WJSN reaches #1 on the So Casual 100™ for the first time.

So Casual 100™: #1(new) Happy, WJSN [2 weeks]. *new peak*

“Happy” by WJSN debuts at #91 in So Casual 100™.

So Casual 100™: #91(re) Happy, WJSN [1 weeks]. *new peak*