Suggestive requires there to be nudity or sex, which so far there has been none.
Suggestive in this context means wet white shirts with women's nipples & areolas or, with white panties or long as hell shirts, labia bulge showing through the fabric (yuri (ecchi/doujinshi)); it can also include men's nipples & areolas or, same logic as before, peanor bulge showing through the fabric (yaoi (ecch/doujinshi)).
Sex is also not showing full on peanor going in the virgainar, i.e. by using clothes to cover up the insertion; not showing him/her giving their partner head, i.e. by blocking the view with the back of their head; or not showing peanor entering the chussy, i.e. by using an obstruction in a room or viewing her from behind, covering the peanor with her boobs, or showing a very low angle.