Name a kpop song with the last letter of the other song

[iiserene]

sour

 

[Lisanna]

really

 

[jang_wonyoung]

you&i

 

[Lisanna]

icecream

 

[jang_wonyoung]

monster

 

[Lisanna]

really

 

[iiserene]

yessir

 

[Lisanna]

ringo

 

[iiserene]

obsession

 

[Lisanna]

Not shy

 

[iiserene]

yes or yes

 

[Lisanna]

Sexy free and single

 

[jjangwony]

eta

 

[iiserene]

answer

 

[jjangwony]

run2u

 

[iiserene]

utopia

 

[Lisanna]

after midnight

 

[iiserene]

telephone

 

[jang_wonyoung]

electric shock

 

[Lisanna]

knock knock