Here's a list to help you get everyone to like you quicker, showing what items they like!
I did not create this list. I found this list on GameFAQs, posted by LetoYami. I updated it to reflect the official translation of the game.Kiyotaka Ishimaru (four events)
Mac’s Gloves, Red Scarf, Adorable Reactions Collection, Chin Drill
Byakuya Togami (five events)
Civet Coffee, Scarab Brooch, Golden Gun, Old Timey Radio, Crystal Skull, Golden Airplane, Prince Shotoku’s Globe
Mondo Owada (four events)
Sonic Cup-a-Noodle, Roller slippers, Fresh Bindings, Quality Chinchilla Cover
Leon Kuwata (three events)
Everlasting Bracelet, Blueberry Perfume, Jimmy Decay Shirt, Project Zombie
Hifumi Yamada (five events)
Coca Cola, Potato Chips, Demon Angel Princess Figure, Unending Dandelion, The Funplane
Yasuhiro Hagakure (six events)
Crystal Skull, Golden Airplane, Prince Shotoku’s Globe, Sacred Tree Sprig, Meteorite Arrowhead
Sayaka Maizono (two events)
Kitten Hairclip, Everlasting Bracelet, Love Status Ring, Rose In Vitro, Cherry Blossom Bouquet
Kyoko Kirigiri (four events)
Civet Coffee, Blueberry Perfume, Rose In Vitro, Cherry Blossom Bouquet, Bojobo Dolls
Aoi Asahina (six events)
Flotation Donut, Kitten Hairclip, G-sick, Waterlover, Astral Boy Doll
Toko Fukawa (five events)
Everlasting Bracelet, Glasses, Rose In Vitro, Cherry Blossom Bouquet, Antique Doll, Maiden's Handbag, Novelist’s Fountain Pen
Sakura Ogami (five events)
God of War Charm, Fresh Bindings, Rose In Vitro, Asura’s Tears, Secrets of the Omoplata
Celeste (six events)
Rose Hip Tea, Love Status Ring, Zoles Diamond, Rose Whip, Antique Doll
Junko Enoshima (three events)
Ration, Kitten Hairclip, Rose In Vitro, Golden Airplane
Chihiro Fujisaki (four events)
Blueberry Perfume, Unlimited Dandelion Works, Millenium Prize Problems, The Funplane
Everlasting Bracelet, Maiden's Handbag, Kokeshi Dynamo