Source: https://ncode.syosetu.com/n3415ij/
synopsis
Tsukasa Kirishima is a freshman in college.
Komaki Kouichi, a high school student who loves to cook, is harshly rejected by his childhood friend for being “Girly”
When a heartbroken Koichi returns to the apartment where he lives alone, he finds Hashiro Shiho, a high school girl who is a very popular idol, sitting uneasily on the sofa. Shiho has become his younger sister as a result of their parents’ remarriage, and Koichi cooks for her.
But as a result, Shiho says she wants to quit her idol career and marry Koichi. ……!
It’s a romantic comedy about two people living together, him with his idol stepsister, cooking together, going on a secret date in the city, taking a bath and bed together (!?!), and so on.
1st Course Yokkaichi Tonteki
Episode 1 – I was dumped by my childhood friend!
Episode 2 – My house is an idol’s house!?
Episode 3 – live together as a family
2nd Course Salt Bean Soup
Episode 5 – Shiho’s situation, my situation
Episode 6 – I wake up to a very popular idol
Episode 7 – Please make miso soup for me every morning ?
Episode 8 – Childhood friend is coming over?
3nd Course Center of Beef
Episode 9 – The Souvenir is olive oil
Episode 10 – Nice to meet you the second time
Episode 11 – I can’t refuse my stepsister’s request
Episode 12 – Do we look like a couple?
Episode 13 – Idol-Ichinomiya Mina
4th Course Chilled Candy
Episode 14 – There’s only one shining star
Episode 15 – A silver-haired, blue-eyed idol barges into my house.
Episode 16 – Onii san’s a cheater!
Episode 18 – First time cooking together?
5th Course Towada barayaki
Episode 21 – Is it a silver-haired idol or a childhood friend who lives with you?
Episode 22 – Finally, just the two of us
Episode 23 – We’ll take it slow together