A possible concise summary is:
Eunchae, a 17-year-old idol from LE SSERAFIM, celebrates her birthday with Red Velvet's Seulgi and Yeri on her show Eunchae's Star Diary. They talk about Red Velvet's comeback with Chill Kill, their favorite songs and music videos, their MBTI types, their hobbies, and their funny stories on stage. They also answer questions from fans and do some challenges. Eunchae draws a diary of her day with them.
Here are the key facts extracted from the text:
1. EUNCHAE's 27th Star Diary is on her 17th birthday, November 10th.
2. Red Velvet's YERI and SEULGI visited EUNCHAE's Star Diary for their comeback with a new full-length album after 6 years.
3. EUNCHAE is 17 years old and a fan of Red Velvet.
4. YERI and EUNCHAE share a resemblance, with people saying they look alike.
5. EUNCHAE's favorite Red Velvet songs are "Peek-A-Boo" and "Bad Boy."
6. Red Velvet's full-length album has been released after 6 years.
7. SEULGI and YERI introduced their new song "Chill Kill," which breaks the silence and starts a new chapter.
8. The song's music video is in a dramatized style, and all five members acted in it.
9. SEULGI's favorite Red Velvet music video is "Ice Cream Cake," while YERI's is "Peek-A-Boo."
10. EUNCHAE is an ISFP, and SEULGI is also an ISFP, sharing the same personality type.
11. SEULGI has an older brother, and EUNCHAE has an older brother as well.
12. YERI has three younger sisters, and the youngest is 13 years old.
13. EUNCHAE wants to have a mature image and look pretty rather than cute.
14. SEULGI advised EUNCHAE to wait a while and not try too hard to look mature.
15. SEULGI thinks that EUNCHAE will have a mature image when she gets older.
16. EUNCHAE's favorite choreography from LE SSERAFIM is "Eve, Psyche & the Bluebeard’s wife."
17. SEULGI's favorite LE SSERAFIM dance is also "Eve, Psyche & the Bluebeard’s wife."
18. EUNCHAE is good at drawing and has been improving over time.
19. SEULGI drew a picture for EUNCHAE, and EUNCHAE was impressed.
20. The Star Diary of EUNCHAE is a popular show where she interviews guests and shares her thoughts.
Note that some of these facts may be opinion-based or subjective, but I have tried to stick to verifiable information.