- Niiisan's【 5 songs in total 】
- Sorted by ＞ Sorted by album (Time) Sorted by song name (Characters) Sorted by other
- Song Lyricist Composer Date
- 1 Good Day Sangwoo・Rui・Mr.K Sangwoo・Rui 2017-06
- 2 If you Mr.K Niiisan's 2017-06
- 3 Lovepresso Mr.K Niiisan's 2017-06
- 4 TITANIC Sangwoo・Rui・Mr.K Niiisan's 2017-06
- 5 TOKYO Sangwoo・Rui・Mr.K Sangwoo・Rui 2017-06