To form the comparative meaning more than, use más followed by the adjective and que. To form the comparative meaning less than, use menos followed by the adjective and que. Superlatives are used ...

So, somebody's “favourite manga” is SUKINA MANGA. To get the past form of I-adjectives, you change I to KATTA. For example, the past form of YASUI (inexpensive) is YASUKATTA. The past form of ...

To turn I-adjectives into the negative form, you replace I with KUNAI. So, the negative form of ATARASHII (new) is ATARASHIKUNAI (not new). To make NA-adjectives into their negative form ...