Holiday ~Cooking Flexion?~

Bangaihen 18: Holiday ~Cooking Flexion?~ is the eighteenth bangaihen chapter of the To Love-Ru Darkness manga series.

In the cover art, Lala and Haruna wearing swimsuits appear with the text, "The magnificence of the swimsuits in a romantic day in the swimming pool".

Summary
In the beginning, Haruna in a bookstore, thinking on which she said to her sister, Skiho, if people of Haruna's similar sign, cooking something for themselves and give it to their sweetheart, and the sweetheart would recognize it as the chance of love. Haruna is looking for book of cuisine, when she listens to Rito and Celine's voice, then they come, and when she waves them, she already a book of cuisine and asks if they are interest to cuisine, he says that it is only for learning something more on cuisine as Mikan always do for cooking, but he wants to help her, she likes the way of what he is worried about her, he finishes to say that he had read the recipe one or some times but hasn't thought about it, Haruna agrees with what her sister said, and hesitantly invites him to her home for teaching him how to cook omelette.

In Sairenji's home, Rito asks Haruna where her sister is, she says the sister is at work. And then, she calculates that there only two would be put nervous, he also ends to say that he only has to be tought for cooking and that Rito didn't do anything wrong. She also thinks that it is the only way to surpass Lala, but stops thinking in a perverted situation, where she only has an apron and Rito grabs it at the back, and she begins to stir her head, embarrassed for that she thought, and Rito asks her what happened, she says that nothing happened, and decides to start cooking for omelette.

Meanwhile they cook omelette, he says that she is cooking very well, she answers because since her childhood, she is only interest to cook and she would like to go to highschool for leaning more about cooking, and she talks that she'd like to join the cooking club, and then Rito asks why she actually joined the tennis club, and she answers that she is inspired by it, when she won the sports festival of the secondary school, she'd also like to gain the victory to her team in any kind of sports and she decided to join the present club, Rito gets surprised when he listens to which she saw it in this way, but when she calculates what she said then, gets very nervous and begins to say it in excited way, as he has to cook the omelette.

When they finally finishes cooking, Rito congratulates the plate that was made, but she is asked if this one served for what she said her sister, when Maron begins to run all the place, escaping from Celine scribbling with a marker, Maron hides below Haruna's blouse and Celine sees this dog jumping above her, and ends up to be a perverted situation, where Rito raises up her panties with a spoon, Celine sucks her breast, while Maron is licking her. When Rito sees this, he begins to say that he did not see anything and leaves while grabbing Celine. In Yuuki's house, Rito tries to cook an omelette for Mikan, and he asks Mikan how to look at this, when she tastes it, says that it looks disagreeable, but actually delicious. In Sairenji's house, Akiho asks Haruna why she blushes and asks that what happened then. Haruna, who is embarrassed, answers that nothing happened.