Charge! A Secret Garden is the eighteenth chapter of the To LOVE-Ru manga.
Plot[]
On the last night of the seaside summer school, Saruyama and the other classmates talk about how they need to do something memorable to leave an impression on the trip. Saruyama decides that they should visit the girl's room (Lala in particular) and drag Rito with them. Meanwhile, in the girl's room, Lala, Risa, and Mio leave to go get some drinks from the vending machine. Haruna stays behind and contemplates how she may be jealous that Lala is such good friends with Rito.
In the hallway, Saryama explains to Rito people become more excited and open-minded at night during a trip, and it is the perfect chance to get to know the girls. Rito could form a close relationship with Haruna. In front of the girls' room, The prof Naruiwa (of the disciplinary team) spots the boys. They run, but Rito is pushed and left behind.
Haruna opens up her door to find Rito and pulls him inside. Rito explains the embarrassing situation making Haruna smile. Waiting for the teacher will be gone, Rito tries to initiate some small talk with Haruna until becomes clear that he is alone with her. Haruna asks Rito if he came here for Lala. However, right as Rito is about to confess to Haruna, Lala, Risa, and Mio come back, and Haruna hides him under her blanket.