Mahou Shoujo Lalabel: Umi ga Yobu Natsuyasumi  

Mahou Shoujo Lalabel (1980), 魔法少女ララベル (1980), 魔法少女ララベル 海が呼ぶ夏休み, Magical Girl Lalabel: the Sea Calls for a Summer Vacation

In the summer months, Lalabel along with her companions Teko and Toko checked into a hostel owned by Tekos uncle. Unfortunately, his aunt and uncle were absent for an operation, leaving Ryota to manage the facility on his own. Recognizing the need for assistance, Lalabel chose to lend a helping hand to the young boy, resulting in all of them becoming actively involved in managing the hostel's operations.