| Title | Onii-chan ni wa Himitsu |
| Circle | AtsuatsuCOOK, SC |
| Artist | Katagiri Atsuko, Gyuunyuu Rinda |
| Parody | Original |
| Released | 2018/12/29 |
| Event | Comiket 95 |
| Pages | 36 |
| Price (JPY) | 724 |
| Purchased | 2019/01/04 |
| Retailer | Toranoana |
[AtsuatsuCOOK, SC (Katagiri Atsuko, Gyuunyuu Rinda)] Onii-chan ni wa Himitsu
[あつあつCOOK、SC (かたぎりあつこ、牛乳リンダ)] おにいちゃんにはヒミツ